642159005900 has 36 divisors (see below), whose sum is σ = 1395986932368. Its totient is φ = 256402424640.

The previous prime is 642159005897. The next prime is 642159005987. The reversal of 642159005900 is 9500951246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5708744 + ... + 5820143.

It is an arithmetic number, because the mean of its divisors is an integer number (38777414788).

Almost surely, 2^642159005900 is an apocalyptic number.

It is an amenable number.

642159005900 is an abundant number, since it is smaller than the sum of its proper divisors (753827926468).

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

642159005900 is a wasteful number, since it uses less digits than its factorization.

642159005900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11529458 (or 11529451 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 642159005900 in words is "six hundred forty-two billion, one hundred fifty-nine million, five thousand, nine hundred".