21868072484 has 12 divisors (see below), whose sum is σ = 38349024000. Its totient is φ = 10911208488.

The previous prime is 21868072403. The next prime is 21868072493. The reversal of 21868072484 is 48427086812.

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, 5704784 + ... + 5708615.

It is an arithmetic number, because the mean of its divisors is an integer number (3195752000).

Almost surely, 2^21868072484 is an apocalyptic number.

It is an amenable number.

21868072484 is a deficient number, since it is larger than the sum of its proper divisors (16480951516).

21868072484 is a wasteful number, since it uses less digits than its factorization.

21868072484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11413882 (or 11413880 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 50.

The spelling of 21868072484 in words is "twenty-one billion, eight hundred sixty-eight million, seventy-two thousand, four hundred eighty-four".