642216326900 has 36 divisors (see below), whose sum is σ = 1396619485632. Its totient is φ = 256331681760.

The previous prime is 642216326893. The next prime is 642216326923. The reversal of 642216326900 is 9623612246.

It is a super-2 number, since 2×642216326900² (a number of 24 digits) contains 22 as substring.

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, 6889082 + ... + 6981681.

It is an arithmetic number, because the mean of its divisors is an integer number (38794985712).

Almost surely, 2^642216326900 is an apocalyptic number.

It is an amenable number.

642216326900 is an abundant number, since it is smaller than the sum of its proper divisors (754403158732).

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

642216326900 is a wasteful number, since it uses less digits than its factorization.

642216326900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13871240 (or 13871233 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 642216326900 in words is "six hundred forty-two billion, two hundred sixteen million, three hundred twenty-six thousand, nine hundred".