64656137434000 has 160 divisors (see below), whose sum is σ = 189182772170496. Its totient is φ = 20863829145600.

The previous prime is 64656137433931. The next prime is 64656137434003. The reversal of 64656137434000 is 43473165646.

It is a super-2 number, since 2×64656137434000² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64656137434003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135594222 + ... + 136070221.

Almost surely, 2^{64656137434000} is an apocalyptic number.

It is an amenable number.

64656137434000 is an abundant number, since it is smaller than the sum of its proper divisors (124526634736496).

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

64656137434000 is a wasteful number, since it uses less digits than its factorization.

64656137434000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271664490 (or 271664474 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 49.

The spelling of 64656137434000 in words is "sixty-four trillion, six hundred fifty-six billion, one hundred thirty-seven million, four hundred thirty-four thousand".