22631122144661 has 4 divisors (see below), whose sum is σ = 22647509634924. Its totient is φ = 22614734654400.

The previous prime is 22631122144651. The next prime is 22631122144663. The reversal of 22631122144661 is 16644122113622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9340321765636 + 13290800379025 = 3056194^2 + 3645655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22631122144661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22631122144663) 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, 8193743060 + ... + 8193745821.

It is an arithmetic number, because the mean of its divisors is an integer number (5661877408731).

Almost surely, 2^{22631122144661} is an apocalyptic number.

It is an amenable number.

22631122144661 is a deficient number, since it is larger than the sum of its proper divisors (16387490263).

22631122144661 is a wasteful number, since it uses less digits than its factorization.

22631122144661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387490262.

The product of its digits is 165888, while the sum is 41.

The spelling of 22631122144661 in words is "twenty-two trillion, six hundred thirty-one billion, one hundred twenty-two million, one hundred forty-four thousand, six hundred sixty-one".