12365520264 has 160 divisors (see below), whose sum is σ = 36728920800. Its totient is φ = 3875869440.

The previous prime is 12365520263. The next prime is 12365520311. The reversal of 12365520264 is 46202556321.

12365520264 is a `hidden beast` number, since 12 + 3 + 65 + 520 + 2 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12365520263) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1683079 + ... + 1690409.

It is an arithmetic number, because the mean of its divisors is an integer number (229555755).

Almost surely, 2^12365520264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12365520264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18364460400).

12365520264 is an abundant number, since it is smaller than the sum of its proper divisors (24363400536).

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

12365520264 is a wasteful number, since it uses less digits than its factorization.

12365520264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7505 (or 7492 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 12365520264 in words is "twelve billion, three hundred sixty-five million, five hundred twenty thousand, two hundred sixty-four".