642700481896 has 32 divisors (see below), whose sum is σ = 1314700099200. Its totient is φ = 292117587840.

The previous prime is 642700481837. The next prime is 642700481909. The reversal of 642700481896 is 698184007246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170865 + ... + 1629823.

It is an arithmetic number, because the mean of its divisors is an integer number (41084378100).

Almost surely, 2^642700481896 is an apocalyptic number.

It is an amenable number.

642700481896 is an abundant number, since it is smaller than the sum of its proper divisors (671999617304).

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

642700481896 is a wasteful number, since it uses less digits than its factorization.

642700481896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474889 (or 474885 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 642700481896 in words is "six hundred forty-two billion, seven hundred million, four hundred eighty-one thousand, eight hundred ninety-six".