642613555612 has 12 divisors (see below), whose sum is σ = 1285227111280. Its totient is φ = 275405809536.

The previous prime is 642613555609. The next prime is 642613555627. The reversal of 642613555612 is 216555316246.

642613555612 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 11475242037 + ... + 11475242092.

Almost surely, 2^642613555612 is an apocalyptic number.

It is an amenable number.

642613555612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

642613555612 is a wasteful number, since it uses less digits than its factorization.

642613555612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22950484140 (or 22950484138 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The spelling of 642613555612 in words is "six hundred forty-two billion, six hundred thirteen million, five hundred fifty-five thousand, six hundred twelve".