64877745810 has 64 divisors (see below), whose sum is σ = 160793662464. Its totient is φ = 16735948800.

The previous prime is 64877745809. The next prime is 64877745817. The reversal of 64877745810 is 1854777846.

64877745810 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 2×64877745810² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64877745817) 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, 2570050 + ... + 2595170.

It is an arithmetic number, because the mean of its divisors is an integer number (2512400976).

Almost surely, 2^64877745810 is an apocalyptic number.

64877745810 is an abundant number, since it is smaller than the sum of its proper divisors (95915916654).

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

64877745810 is a wasteful number, since it uses less digits than its factorization.

64877745810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27939.

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 64877745810 in words is "sixty-four billion, eight hundred seventy-seven million, seven hundred forty-five thousand, eight hundred ten".