642919513516 has 48 divisors (see below), whose sum is σ = 1342240604992. Its totient is φ = 263695046400.

The previous prime is 642919513447. The next prime is 642919513541. The reversal of 642919513516 is 615315919246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5023515 + ... + 5149906.

Almost surely, 2^642919513516 is an apocalyptic number.

It is an amenable number.

642919513516 is an abundant number, since it is smaller than the sum of its proper divisors (699321091476).

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

642919513516 is a wasteful number, since it uses less digits than its factorization.

642919513516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173530 (or 10173528 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 52.

The spelling of 642919513516 in words is "six hundred forty-two billion, nine hundred nineteen million, five hundred thirteen thousand, five hundred sixteen".