21377033896 has 16 divisors (see below), whose sum is σ = 40084588800. Its totient is φ = 10687810224.

The previous prime is 21377033891. The next prime is 21377033947. The reversal of 21377033896 is 69833077312.

It is not an unprimeable number, because it can be changed into a prime (21377033891) 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, 53635 + ... + 213613.

It is an arithmetic number, because the mean of its divisors is an integer number (2505286800).

Almost surely, 2^21377033896 is an apocalyptic number.

It is an amenable number.

21377033896 is a deficient number, since it is larger than the sum of its proper divisors (18707554904).

21377033896 is a wasteful number, since it uses less digits than its factorization.

21377033896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176688 (or 176684 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 21377033896 in words is "twenty-one billion, three hundred seventy-seven million, thirty-three thousand, eight hundred ninety-six".