21077043596 has 24 divisors (see below), whose sum is σ = 44372724480. Its totient is φ = 8557596432.

The previous prime is 21077043587. The next prime is 21077043601. The reversal of 21077043596 is 69534077012.

It is a super-2 number, since 2×21077043596² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19808720 + ... + 19809783.

It is an arithmetic number, because the mean of its divisors is an integer number (1848863520).

Almost surely, 2^21077043596 is an apocalyptic number.

It is an amenable number.

21077043596 is an abundant number, since it is smaller than the sum of its proper divisors (23295680884).

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

21077043596 is a wasteful number, since it uses less digits than its factorization.

21077043596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39618533 (or 39618531 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 21077043596 in words is "twenty-one billion, seventy-seven million, forty-three thousand, five hundred ninety-six".