22172674905 has 24 divisors (see below), whose sum is σ = 38445430920. Its totient is φ = 11821489920.

The previous prime is 22172674903. The next prime is 22172674919. The reversal of 22172674905 is 50947627122.

It can be written as a sum of positive squares in 4 ways, for example, as 4002713289 + 18169961616 = 63267^2 + 134796^2 .

It is not a de Polignac number, because 22172674905 - 2¹ = 22172674903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (22172674903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57261 + ... + 218229.

It is an arithmetic number, because the mean of its divisors is an integer number (1601892955).

Almost surely, 2^22172674905 is an apocalyptic number.

It is an amenable number.

22172674905 is a deficient number, since it is larger than the sum of its proper divisors (16272756015).

22172674905 is a wasteful number, since it uses less digits than its factorization.

22172674905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164041 (or 164038 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 22172674905 in words is "twenty-two billion, one hundred seventy-two million, six hundred seventy-four thousand, nine hundred five".