22632620436 has 18 divisors (see below), whose sum is σ = 57210235082. Its totient is φ = 7544206800.

The previous prime is 22632620429. The next prime is 22632620441. The reversal of 22632620436 is 63402623622.

22632620436 is a `hidden beast` number, since 2 + 26 + 3 + 2 + 620 + 4 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18429691536 + 4202928900 = 135756^2 + 64830^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 628683901 = 22632620436 / (2 + 2 + 6 + 3 + 2 + 6 + 2 + 0 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 22632620436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314341915 + ... + 314341986.

Almost surely, 2^22632620436 is an apocalyptic number.

It is an amenable number.

22632620436 is an abundant number, since it is smaller than the sum of its proper divisors (34577614646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22632620436 is a wasteful number, since it uses less digits than its factorization.

22632620436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628683911 (or 628683906 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 22632620436 in words is "twenty-two billion, six hundred thirty-two million, six hundred twenty thousand, four hundred thirty-six".