642675204922 has 32 divisors (see below), whose sum is σ = 1017253883520. Its totient is φ = 303918236160.

The previous prime is 642675204911. The next prime is 642675204937. The reversal of 642675204922 is 229402576246.

642675204922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030422 + ... + 2325502.

It is an arithmetic number, because the mean of its divisors is an integer number (31789183860).

Almost surely, 2^642675204922 is an apocalyptic number.

642675204922 is a deficient number, since it is larger than the sum of its proper divisors (374578678598).

642675204922 is a wasteful number, since it uses less digits than its factorization.

642675204922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295638.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 642675204922 in words is "six hundred forty-two billion, six hundred seventy-five million, two hundred four thousand, nine hundred twenty-two".