65626464642 has 32 divisors (see below), whose sum is σ = 131623783872. Its totient is φ = 21813732864.

The previous prime is 65626464637. The next prime is 65626464653. The reversal of 65626464642 is 24646462656.

It is a super-2 number, since 2×65626464642² (a number of 22 digits) contains 22 as substring.

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, 6170133 + ... + 6180759.

It is an arithmetic number, because the mean of its divisors is an integer number (4113243246).

Almost surely, 2^65626464642 is an apocalyptic number.

65626464642 is an abundant number, since it is smaller than the sum of its proper divisors (65997319230).

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

65626464642 is a wasteful number, since it uses less digits than its factorization.

65626464642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13442.

The product of its digits is 9953280, while the sum is 51.

The spelling of 65626464642 in words is "sixty-five billion, six hundred twenty-six million, four hundred sixty-four thousand, six hundred forty-two".