64157292516 has 24 divisors (see below), whose sum is σ = 149987696544. Its totient is φ = 21344714560.

The previous prime is 64157292497. The next prime is 64157292517. The reversal of 64157292516 is 61529275146.

64157292516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64157292516² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64157292517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5124690 + ... + 5137193.

It is an arithmetic number, because the mean of its divisors is an integer number (6249487356).

Almost surely, 2^64157292516 is an apocalyptic number.

It is an amenable number.

64157292516 is an abundant number, since it is smaller than the sum of its proper divisors (85830404028).

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

64157292516 is a wasteful number, since it uses less digits than its factorization.

64157292516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262411 (or 10262409 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The spelling of 64157292516 in words is "sixty-four billion, one hundred fifty-seven million, two hundred ninety-two thousand, five hundred sixteen".