12365731172 has 12 divisors (see below), whose sum is σ = 21640820796. Its totient is φ = 6182639520.

The previous prime is 12365731153. The next prime is 12365731177. The reversal of 12365731172 is 27113756321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2827474276 + 9538256896 = 53174^2 + 97664^2 .

It is a super-2 number, since 2×12365731172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12365731177) 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, 152198 + ... + 218850.

It is an arithmetic number, because the mean of its divisors is an integer number (1803401733).

Almost surely, 2^12365731172 is an apocalyptic number.

It is an amenable number.

12365731172 is a deficient number, since it is larger than the sum of its proper divisors (9275089624).

12365731172 is a wasteful number, since it uses less digits than its factorization.

12365731172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113038 (or 113036 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The spelling of 12365731172 in words is "twelve billion, three hundred sixty-five million, seven hundred thirty-one thousand, one hundred seventy-two".