21900673296 has 80 divisors (see below), whose sum is σ = 62906003520. Its totient is φ = 7295235840.

The previous prime is 21900673243. The next prime is 21900673321. The reversal of 21900673296 is 69237600912.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644836 + ... + 677948.

It is an arithmetic number, because the mean of its divisors is an integer number (786325044).

Almost surely, 2^21900673296 is an apocalyptic number.

It is an amenable number.

21900673296 is an abundant number, since it is smaller than the sum of its proper divisors (41005330224).

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

21900673296 is a wasteful number, since it uses less digits than its factorization.

21900673296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34661 (or 34649 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 21900673296 in words is "twenty-one billion, nine hundred million, six hundred seventy-three thousand, two hundred ninety-six".