21162267692 has 12 divisors (see below), whose sum is σ = 39212437320. Its totient is φ = 9958714176.

The previous prime is 21162267691. The next prime is 21162267719. The reversal of 21162267692 is 29676226112.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21162267691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155604842 + ... + 155604977.

It is an arithmetic number, because the mean of its divisors is an integer number (3267703110).

Almost surely, 2^21162267692 is an apocalyptic number.

It is an amenable number.

21162267692 is a deficient number, since it is larger than the sum of its proper divisors (18050169628).

21162267692 is a wasteful number, since it uses less digits than its factorization.

21162267692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311209840 (or 311209838 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The spelling of 21162267692 in words is "twenty-one billion, one hundred sixty-two million, two hundred sixty-seven thousand, six hundred ninety-two".