64157010882438 has 32 divisors (see below), whose sum is σ = 135877851600480. Its totient is φ = 20125327288320.

The previous prime is 64157010882389. The next prime is 64157010882487. The reversal of 64157010882438 is 83428801075146.

It is an interprime number because it is at equal distance from previous prime (64157010882389) and next prime (64157010882487).

It is a super-2 number, since 2×64157010882438² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36039103 + ... + 37777386.

It is an arithmetic number, because the mean of its divisors is an integer number (4246182862515).

Almost surely, 2^{64157010882438} is an apocalyptic number.

64157010882438 is an abundant number, since it is smaller than the sum of its proper divisors (71720840718042).

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

64157010882438 is a wasteful number, since it uses less digits than its factorization.

64157010882438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73825032.

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 64157010882438 in words is "sixty-four trillion, one hundred fifty-seven billion, ten million, eight hundred eighty-two thousand, four hundred thirty-eight".