642612025562 has 32 divisors (see below), whose sum is σ = 1099330045632. Its totient is φ = 279092438784.

The previous prime is 642612025501. The next prime is 642612025589. The reversal of 642612025562 is 265520216246.

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, 2328173 + ... + 2589519.

It is an arithmetic number, because the mean of its divisors is an integer number (34354063926).

Almost surely, 2^642612025562 is an apocalyptic number.

642612025562 is a deficient number, since it is larger than the sum of its proper divisors (456718020070).

642612025562 is a wasteful number, since it uses less digits than its factorization.

642612025562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266942.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 642612025562 in words is "six hundred forty-two billion, six hundred twelve million, twenty-five thousand, five hundred sixty-two".