| Base | Representation |
|---|---|
| bin | 11100000111001101010110… |
| … | …01000101010101001000000 |
| 3 | 22002212222002110201110000000 |
| 4 | 32003212223020222221000 |
| 5 | 31100331021334421242 |
| 6 | 335251511533000000 |
| 7 | 16010241354211500 |
| oct | 1603465310525100 |
| 9 | 262788073643000 |
| 10 | 61820335467072 |
| 11 | 1877494779a126 |
| 12 | 6b25241323000 |
| 13 | 286582bb36640 |
| 14 | 113a197b93a00 |
| 15 | 72314ea3ea4c |
| hex | 3839ab22aa40 |
61820335467072 has 1344 divisors, whose sum is σ = 242622972614400. Its totient is φ = 15445721862144.
The previous prime is 61820335467067. The next prime is 61820335467097. The reversal of 61820335467072 is 27076453302816.
It is a happy number.
61820335467072 is a `hidden beast` number, since 6 + 1 + 8 + 20 + 3 + 3 + 546 + 7 + 0 + 72 = 666.
It is a tau number, because it is divible by the number of its divisors (1344).
It is a super-2 number, since 2×618203354670722 (a number of 28 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1694014458 + ... + 1694050950.
It is an arithmetic number, because the mean of its divisors is an integer number (180523045100).
Almost surely, 261820335467072 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 61820335467072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121311486307200).
61820335467072 is an abundant number, since it is smaller than the sum of its proper divisors (180802637147328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61820335467072 is a wasteful number, since it uses less digits than its factorization.
61820335467072 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36572 (or 36537 counting only the distinct ones).
The product of its (nonzero) digits is 10160640, while the sum is 54.
Adding to 61820335467072 its reverse (27076453302816), we get a palindrome (88896788769888).
The spelling of 61820335467072 in words is "sixty-one trillion, eight hundred twenty billion, three hundred thirty-five million, four hundred sixty-seven thousand, seventy-two".
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