| Base | Representation |
|---|---|
| bin | 111101101010110011… |
| … | …100111001001100000 |
| 3 | 20022220201212212101100 |
| 4 | 331222303213021200 |
| 5 | 2041102401032112 |
| 6 | 50230331434400 |
| 7 | 4532622213633 |
| oct | 755263471140 |
| 9 | 208821785340 |
| 10 | 66216424032 |
| 11 | 2609a499490 |
| 12 | 109bb8b5a00 |
| 13 | 6323610ac5 |
| 14 | 32c231bc1a |
| 15 | 1ac838b2dc |
| hex | f6ace7260 |
66216424032 has 144 divisors (see below), whose sum is σ = 205512914880. Its totient is φ = 20056646400.
The previous prime is 66216424007. The next prime is 66216424033. The reversal of 66216424032 is 23042461266.
66216424032 is a `hidden beast` number, since 6 + 6 + 2 + 1 + 642 + 4 + 0 + 3 + 2 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×662164240322 (a number of 22 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (66216424033) by changing a digit.
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 23 ways as a sum of consecutive naturals, for example, 11969107 + ... + 11974637.
It is an arithmetic number, because the mean of its divisors is an integer number (1427173020).
Almost surely, 266216424032 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 66216424032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102756457440).
66216424032 is an abundant number, since it is smaller than the sum of its proper divisors (139296490848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66216424032 is a wasteful number, since it uses less digits than its factorization.
66216424032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9337 (or 9326 counting only the distinct ones).
The product of its (nonzero) digits is 82944, while the sum is 36.
Adding to 66216424032 its reverse (23042461266), we get a palindrome (89258885298).
The spelling of 66216424032 in words is "sixty-six billion, two hundred sixteen million, four hundred twenty-four thousand, thirty-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •