22655251231172 has 24 divisors (see below), whose sum is σ = 45316903551360. Its totient is φ = 9708021722880.

The previous prime is 22655251231157. The next prime is 22655251231189. The reversal of 22655251231172 is 27113215255622.

It is a happy number.

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, 56950829 + ... + 57347252.

It is an arithmetic number, because the mean of its divisors is an integer number (1888204314640).

Almost surely, 2^{22655251231172} is an apocalyptic number.

It is an amenable number.

22655251231172 is an abundant number, since it is smaller than the sum of its proper divisors (22661652320188).

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

22655251231172 is a wasteful number, since it uses less digits than its factorization.

22655251231172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114305171 (or 114305169 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

Adding to 22655251231172 its reverse (27113215255622), we get a palindrome (49768466486794).

The spelling of 22655251231172 in words is "twenty-two trillion, six hundred fifty-five billion, two hundred fifty-one million, two hundred thirty-one thousand, one hundred seventy-two".