64157033317664 has 48 divisors (see below), whose sum is σ = 144353864491200. Its totient is φ = 27495768655104.

The previous prime is 64157033317651. The next prime is 64157033317717. The reversal of 64157033317664 is 46671333075146.

It is a super-2 number, since 2×64157033317664² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117737867 + ... + 118281525.

It is an arithmetic number, because the mean of its divisors is an integer number (3007372176900).

Almost surely, 2^{64157033317664} is an apocalyptic number.

It is an amenable number.

64157033317664 is an abundant number, since it is smaller than the sum of its proper divisors (80196831173536).

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

64157033317664 is a wasteful number, since it uses less digits than its factorization.

64157033317664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070505 (or 1070497 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 56.

The spelling of 64157033317664 in words is "sixty-four trillion, one hundred fifty-seven billion, thirty-three million, three hundred seventeen thousand, six hundred sixty-four".