22556520163231 has 4 divisors (see below), whose sum is σ = 23743705435000. Its totient is φ = 21369334891464.

The previous prime is 22556520163207. The next prime is 22556520163253. The reversal of 22556520163231 is 13236102565522.

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

It is a cyclic number.

It is not a de Polignac number, because 22556520163231 - 2¹⁷ = 22556520032159 is a prime.

It is a super-2 number, since 2×22556520163231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22556520163031) 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, 593592635856 + ... + 593592635893.

It is an arithmetic number, because the mean of its divisors is an integer number (5935926358750).

Almost surely, 2^{22556520163231} is an apocalyptic number.

22556520163231 is a deficient number, since it is larger than the sum of its proper divisors (1187185271769).

22556520163231 is a wasteful number, since it uses less digits than its factorization.

22556520163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187185271768.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 22556520163231 in words is "twenty-two trillion, five hundred fifty-six billion, five hundred twenty million, one hundred sixty-three thousand, two hundred thirty-one".