642911054552 has 32 divisors (see below), whose sum is σ = 1311569162400. Its totient is φ = 293669121024.

The previous prime is 642911054521. The next prime is 642911054563. The reversal of 642911054552 is 255450119246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31855052 + ... + 31875227.

It is an arithmetic number, because the mean of its divisors is an integer number (40986536325).

Almost surely, 2^642911054552 is an apocalyptic number.

It is an amenable number.

642911054552 is an abundant number, since it is smaller than the sum of its proper divisors (668658107848).

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

642911054552 is a wasteful number, since it uses less digits than its factorization.

642911054552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63730395 (or 63730391 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 642911054552 in words is "six hundred forty-two billion, nine hundred eleven million, fifty-four thousand, five hundred fifty-two".