21900293392 has 20 divisors (see below), whose sum is σ = 42434801856. Its totient is φ = 10949376800.

The previous prime is 21900293369. The next prime is 21900293411. The reversal of 21900293392 is 29339200912.

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 3 ways as a sum of consecutive naturals, for example, 238173 + ... + 317059.

Almost surely, 2^21900293392 is an apocalyptic number.

It is an amenable number.

21900293392 is a deficient number, since it is larger than the sum of its proper divisors (20534508464).

21900293392 is a wasteful number, since it uses less digits than its factorization.

21900293392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96246 (or 96240 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 21900293392 in words is "twenty-one billion, nine hundred million, two hundred ninety-three thousand, three hundred ninety-two".