642752334744 has 32 divisors (see below), whose sum is σ = 1730487055920. Its totient is φ = 197769949056.

The previous prime is 642752334703. The next prime is 642752334823. The reversal of 642752334744 is 447433257246.

It is a congruent 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, 1030051507 + ... + 1030052130.

Almost surely, 2^642752334744 is an apocalyptic number.

It is an amenable number.

642752334744 is an abundant number, since it is smaller than the sum of its proper divisors (1087734721176).

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

642752334744 is a wasteful number, since it uses less digits than its factorization.

642752334744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060103659 (or 2060103655 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 51.

The spelling of 642752334744 in words is "six hundred forty-two billion, seven hundred fifty-two million, three hundred thirty-four thousand, seven hundred forty-four".