642158623900 has 36 divisors (see below), whose sum is σ = 1475453877408. Its totient is φ = 241753834240.

The previous prime is 642158623879. The next prime is 642158623919. The reversal of 642158623900 is 9326851246.

642158623900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188868484 + ... + 188871883.

It is an arithmetic number, because the mean of its divisors is an integer number (40984829928).

Almost surely, 2^642158623900 is an apocalyptic number.

It is an amenable number.

642158623900 is an abundant number, since it is smaller than the sum of its proper divisors (833295253508).

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

642158623900 is a wasteful number, since it uses less digits than its factorization.

642158623900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377740398 (or 377740391 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 642158623900 in words is "six hundred forty-two billion, one hundred fifty-eight million, six hundred twenty-three thousand, nine hundred".