21326944162 has 16 divisors (see below), whose sum is σ = 32107937400. Its totient is φ = 10624355712.

The previous prime is 21326944153. The next prime is 21326944253. The reversal of 21326944162 is 26144962312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20992822321 + 334121841 = 144889^2 + 18279^2 .

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, 768928 + ... + 796180.

Almost surely, 2^21326944162 is an apocalyptic number.

21326944162 is a deficient number, since it is larger than the sum of its proper divisors (10780993238).

21326944162 is a wasteful number, since it uses less digits than its factorization.

21326944162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28677.

The product of its digits is 124416, while the sum is 40.

The spelling of 21326944162 in words is "twenty-one billion, three hundred twenty-six million, nine hundred forty-four thousand, one hundred sixty-two".