642213338570 has 128 divisors (see below), whose sum is σ = 1309167878400. Its totient is φ = 225366147072.

The previous prime is 642213338561. The next prime is 642213338581. The reversal of 642213338570 is 75833312246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 322233494 + ... + 322235486.

It is an arithmetic number, because the mean of its divisors is an integer number (10227874050).

Almost surely, 2^642213338570 is an apocalyptic number.

642213338570 is an abundant number, since it is smaller than the sum of its proper divisors (666954539830).

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

642213338570 is a wasteful number, since it uses less digits than its factorization.

642213338570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 642213338570 in words is "six hundred forty-two billion, two hundred thirteen million, three hundred thirty-eight thousand, five hundred seventy".