61637677164252 has 72 divisors (see below), whose sum is σ = 179198568969056. Its totient is φ = 17498594415744.

The previous prime is 61637677164227. The next prime is 61637677164281. The reversal of 61637677164252 is 25246177673616.

61637677164252 is a `hidden beast` number, since 6 + 1 + 6 + 376 + 7 + 7 + 1 + 6 + 4 + 252 = 666.

61637677164252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 61637677164252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778922083 + ... + 779001210.

Almost surely, 2^{61637677164252} is an apocalyptic number.

It is an amenable number.

61637677164252 is an abundant number, since it is smaller than the sum of its proper divisors (117560891804804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61637677164252 is a wasteful number, since it uses less digits than its factorization.

61637677164252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557923467 (or 1557923462 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 63.

The spelling of 61637677164252 in words is "sixty-one trillion, six hundred thirty-seven billion, six hundred seventy-seven million, one hundred sixty-four thousand, two hundred fifty-two".