| Base | Representation |
|---|---|
| bin | 10010101010011110010… |
| … | …00100100000101110010 |
| 3 | 2021022020202021010212000 |
| 4 | 21111033020210011302 |
| 5 | 41001314102202041 |
| 6 | 1210333212114430 |
| 7 | 64221314061024 |
| oct | 11251710440562 |
| 9 | 2238222233760 |
| 10 | 641277772146 |
| 11 | 227a67647780 |
| 12 | a434a765a16 |
| 13 | 4861a66455b |
| 14 | 23076428014 |
| 15 | 11a33b03bb6 |
| hex | 954f224172 |
641277772146 has 128 divisors (see below), whose sum is σ = 1592882565120. Its totient is φ = 189569937600.
The previous prime is 641277772133. The next prime is 641277772199.
It is a happy number.
641277772146 is a `hidden beast` number, since 6 + 412 + 7 + 7 + 7 + 7 + 214 + 6 = 666.
641277772146 is nontrivially palindromic in base 10.
It is a super-2 number, since 2×6412777721462 (a number of 24 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 641277772092 and 641277772101.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8533416 + ... + 8608236.
It is an arithmetic number, because the mean of its divisors is an integer number (12444395040).
Almost surely, 2641277772146 is an apocalyptic number.
641277772146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 641277772146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796441282560).
641277772146 is an abundant number, since it is smaller than the sum of its proper divisors (951604792974).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
641277772146 is a wasteful number, since it uses less digits than its factorization.
641277772146 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 75197 (or 75191 counting only the distinct ones).
The product of its digits is 5531904, while the sum is 54.
The spelling of 641277772146 in words is "six hundred forty-one billion, two hundred seventy-seven million, seven hundred seventy-two thousand, one hundred forty-six".
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