642230851008 has 28 divisors (see below), whose sum is σ = 1699235793800. Its totient is φ = 214076950272.

The previous prime is 642230851007. The next prime is 642230851019. The reversal of 642230851008 is 800158032246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642230851007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672475983 + ... + 1672476366.

Almost surely, 2^642230851008 is an apocalyptic number.

It is an amenable number.

642230851008 is an abundant number, since it is smaller than the sum of its proper divisors (1057004942792).

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

642230851008 is a wasteful number, since it uses less digits than its factorization.

642230851008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344952364 (or 3344952354 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 642230851008 in words is "six hundred forty-two billion, two hundred thirty million, eight hundred fifty-one thousand, eight".