12623335720 has 32 divisors (see below), whose sum is σ = 30073242600. Its totient is φ = 4752314368.

The previous prime is 12623335667. The next prime is 12623335757. The reversal of 12623335720 is 2753332621.

It can be written as a sum of positive squares in 4 ways, for example, as 7385339844 + 5237995876 = 85938^2 + 72374^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 9281185 + ... + 9282544.

Almost surely, 2^12623335720 is an apocalyptic number.

12623335720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12623335720 is an abundant number, since it is smaller than the sum of its proper divisors (17449906880).

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

12623335720 is a wasteful number, since it uses less digits than its factorization.

12623335720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18563757 (or 18563753 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 34.

The spelling of 12623335720 in words is "twelve billion, six hundred twenty-three million, three hundred thirty-five thousand, seven hundred twenty".