642611160264 has 16 divisors (see below), whose sum is σ = 1606527900720. Its totient is φ = 214203720080.

The previous prime is 642611160259. The next prime is 642611160281. The reversal of 642611160264 is 462061116246.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13387732482 + ... + 13387732529.

It is an arithmetic number, because the mean of its divisors is an integer number (100407993795).

Almost surely, 2^642611160264 is an apocalyptic number.

It is an amenable number.

642611160264 is an abundant number, since it is smaller than the sum of its proper divisors (963916740456).

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

642611160264 is a wasteful number, since it uses less digits than its factorization.

642611160264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26775465020 (or 26775465016 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 642611160264 in words is "six hundred forty-two billion, six hundred eleven million, one hundred sixty thousand, two hundred sixty-four".