21790159232696 has 16 divisors (see below), whose sum is σ = 40856677312200. Its totient is φ = 10895045282784.

The previous prime is 21790159232623. The next prime is 21790159232771. The reversal of 21790159232696 is 69623295109712.

It is a super-2 number, since 2×21790159232696² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 1486535 + ... + 6766838.

Almost surely, 2^{21790159232696} is an apocalyptic number.

It is an amenable number.

21790159232696 is a deficient number, since it is larger than the sum of its proper divisors (19066518079504).

21790159232696 is a wasteful number, since it uses less digits than its factorization.

21790159232696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8583398 (or 8583394 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 21790159232696 in words is "twenty-one trillion, seven hundred ninety billion, one hundred fifty-nine million, two hundred thirty-two thousand, six hundred ninety-six".