64157623464 has 64 divisors (see below), whose sum is σ = 177190272000. Its totient is φ = 19195600320.

The previous prime is 64157623463. The next prime is 64157623469. The reversal of 64157623464 is 46432675146.

It is not an unprimeable number, because it can be changed into a prime (64157623463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1517254 + ... + 1558965.

It is an arithmetic number, because the mean of its divisors is an integer number (2768598000).

Almost surely, 2^64157623464 is an apocalyptic number.

It is an amenable number.

64157623464 is an abundant number, since it is smaller than the sum of its proper divisors (113032648536).

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

64157623464 is a wasteful number, since it uses less digits than its factorization.

64157623464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076318 (or 3076314 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 48.

The spelling of 64157623464 in words is "sixty-four billion, one hundred fifty-seven million, six hundred twenty-three thousand, four hundred sixty-four".