21596244774976 has 63 divisors (see below), whose sum is σ = 43151953055967. Its totient is φ = 10723823337600.

The previous prime is 21596244774931. The next prime is 21596244775009. The reversal of 21596244774976 is 67947744269512.

The square root of 21596244774976 is 4647176.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21596244774899 and 21596244774908.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5613786685 + ... + 5613790531.

It is an arithmetic number, because the mean of its divisors is an integer number (684951635809).

Almost surely, 2^{21596244774976} is an apocalyptic number.

21596244774976 is the 4647176-th square number.

It is an amenable number.

21596244774976 is a deficient number, since it is larger than the sum of its proper divisors (21555708280991).

21596244774976 is an frugal number, since it uses more digits than its factorization.

21596244774976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008 (or 4000 counting only the distinct ones).

The product of its digits is 1280240640, while the sum is 73.

The spelling of 21596244774976 in words is "twenty-one trillion, five hundred ninety-six billion, two hundred forty-four million, seven hundred seventy-four thousand, nine hundred seventy-six".