21926770593 has 16 divisors (see below), whose sum is σ = 35982393216. Its totient is φ = 11565768960.

The previous prime is 21926770553. The next prime is 21926770637. The reversal of 21926770593 is 39507762912.

It is not a de Polignac number, because 21926770593 - 2¹⁰ = 21926769569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21926770543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40158648 + ... + 40159193.

It is an arithmetic number, because the mean of its divisors is an integer number (2248899576).

Almost surely, 2^21926770593 is an apocalyptic number.

It is an amenable number.

21926770593 is a deficient number, since it is larger than the sum of its proper divisors (14055622623).

21926770593 is a wasteful number, since it uses less digits than its factorization.

21926770593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80317864.

The product of its (nonzero) digits is 1428840, while the sum is 51.

The spelling of 21926770593 in words is "twenty-one billion, nine hundred twenty-six million, seven hundred seventy thousand, five hundred ninety-three".