21900673372 has 12 divisors (see below), whose sum is σ = 38579995216. Its totient is φ = 10877817600.

The previous prime is 21900673321. The next prime is 21900673411. The reversal of 21900673372 is 27337600912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18129093 + ... + 18130300.

Almost surely, 2^21900673372 is an apocalyptic number.

It is an amenable number.

21900673372 is a deficient number, since it is larger than the sum of its proper divisors (16679321844).

21900673372 is a wasteful number, since it uses less digits than its factorization.

21900673372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36259548 (or 36259546 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 21900673372 in words is "twenty-one billion, nine hundred million, six hundred seventy-three thousand, three hundred seventy-two".