642915112976 has 20 divisors (see below), whose sum is σ = 1266068492844. Its totient is φ = 316187760000.

The previous prime is 642915112949. The next prime is 642915113017. The reversal of 642915112976 is 679211519246.

It can be written as a sum of positive squares in 2 ways, for example, as 11646726400 + 631268386576 = 107920^2 + 794524^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329361275 + ... + 329363226.

Almost surely, 2^642915112976 is an apocalyptic number.

It is an amenable number.

642915112976 is a deficient number, since it is larger than the sum of its proper divisors (623153379868).

642915112976 is a wasteful number, since it uses less digits than its factorization.

642915112976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658724570 (or 658724564 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The spelling of 642915112976 in words is "six hundred forty-two billion, nine hundred fifteen million, one hundred twelve thousand, nine hundred seventy-six".