12357665232 has 80 divisors (see below), whose sum is σ = 35080558272. Its totient is φ = 3717391360.

The previous prime is 12357665231. The next prime is 12357665237. The reversal of 12357665232 is 23256675321.

It is a super-2 number, since 2×12357665232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12357665231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13083 + ... + 157754.

Almost surely, 2^12357665232 is an apocalyptic number.

12357665232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12357665232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17540279136).

12357665232 is an abundant number, since it is smaller than the sum of its proper divisors (22722893040).

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

12357665232 is a wasteful number, since it uses less digits than its factorization.

12357665232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170996 (or 170990 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The spelling of 12357665232 in words is "twelve billion, three hundred fifty-seven million, six hundred sixty-five thousand, two hundred thirty-two".