21672450700 has 36 divisors (see below), whose sum is σ = 49504444360. Its totient is φ = 8212717440.

The previous prime is 21672450623. The next prime is 21672450713. The reversal of 21672450700 is 705427612.

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, 5701377 + ... + 5705176.

Almost surely, 2^21672450700 is an apocalyptic number.

21672450700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21672450700 is an abundant number, since it is smaller than the sum of its proper divisors (27831993660).

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

21672450700 is a wasteful number, since it uses less digits than its factorization.

21672450700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11406586 (or 11406579 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 21672450700 in words is "twenty-one billion, six hundred seventy-two million, four hundred fifty thousand, seven hundred".