21937984048 has 20 divisors (see below), whose sum is σ = 42943041400. Its totient is φ = 10855908864.

The previous prime is 21937984043. The next prime is 21937984069. The reversal of 21937984048 is 84048973912.

It is a self number, because there is not a number n which added to its sum of digits gives 21937984048.

It is not an unprimeable number, because it can be changed into a prime (21937984043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7066098 + ... + 7069201.

It is an arithmetic number, because the mean of its divisors is an integer number (2147152070).

Almost surely, 2^21937984048 is an apocalyptic number.

It is an amenable number.

21937984048 is a deficient number, since it is larger than the sum of its proper divisors (21005057352).

21937984048 is a wasteful number, since it uses less digits than its factorization.

21937984048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14135404 (or 14135398 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 21937984048 in words is "twenty-one billion, nine hundred thirty-seven million, nine hundred eighty-four thousand, forty-eight".