68637937446 has 48 divisors (see below), whose sum is σ = 160218414720. Its totient is φ = 21111027840.

The previous prime is 68637937421. The next prime is 68637937447. The reversal of 68637937446 is 64473973686.

68637937446 is a `hidden beast` number, since 68 + 63 + 79 + 3 + 7 + 446 = 666.

It is a super-2 number, since 2×68637937446² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637937447) by changing a digit.

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, 549690 + ... + 662898.

It is an arithmetic number, because the mean of its divisors is an integer number (3337883640).

Almost surely, 2^68637937446 is an apocalyptic number.

68637937446 is an abundant number, since it is smaller than the sum of its proper divisors (91580477274).

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

68637937446 is a wasteful number, since it uses less digits than its factorization.

68637937446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115821 (or 115818 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 63.

The spelling of 68637937446 in words is "sixty-eight billion, six hundred thirty-seven million, nine hundred thirty-seven thousand, four hundred forty-six".