12215065752 has 96 divisors (see below), whose sum is σ = 33853248000. Its totient is φ = 3977168832.

The previous prime is 12215065747. The next prime is 12215065801. The reversal of 12215065752 is 25756051221.

12215065752 is a `hidden beast` number, since 12 + 21 + 50 + 6 + 575 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1847749 + ... + 1854347.

It is an arithmetic number, because the mean of its divisors is an integer number (352638000).

Almost surely, 2^12215065752 is an apocalyptic number.

12215065752 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 12215065752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16926624000).

12215065752 is an abundant number, since it is smaller than the sum of its proper divisors (21638182248).

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

12215065752 is a wasteful number, since it uses less digits than its factorization.

12215065752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205 (or 7198 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 12215065752 in words is "twelve billion, two hundred fifteen million, sixty-five thousand, seven hundred fifty-two".