642452115364 has 48 divisors (see below), whose sum is σ = 1176221088000. Its totient is φ = 306462565376.

The previous prime is 642452115359. The next prime is 642452115413. The reversal of 642452115364 is 463511254246.

It is a self number, because there is not a number n which added to its sum of digits gives 642452115364.

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, 62435532 + ... + 62445820.

It is an arithmetic number, because the mean of its divisors is an integer number (24504606000).

Almost surely, 2^642452115364 is an apocalyptic number.

It is an amenable number.

642452115364 is a deficient number, since it is larger than the sum of its proper divisors (533768972636).

642452115364 is a wasteful number, since it uses less digits than its factorization.

642452115364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12012 (or 12010 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The spelling of 642452115364 in words is "six hundred forty-two billion, four hundred fifty-two million, one hundred fifteen thousand, three hundred sixty-four".