12001579560 has 96 divisors (see below), whose sum is σ = 39029669640. Its totient is φ = 3198408192.

The previous prime is 12001579547. The next prime is 12001579571. The reversal of 12001579560 is 6597510021.

12001579560 is a `hidden beast` number, since 1 + 20 + 0 + 1 + 5 + 79 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6962567364 + 5039012196 = 83442^2 + 70986^2 .

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

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, 614262 + ... + 633498.

Almost surely, 2^12001579560 is an apocalyptic number.

12001579560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001579560 is an abundant number, since it is smaller than the sum of its proper divisors (27028090080).

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

12001579560 is a wasteful number, since it uses less digits than its factorization.

12001579560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20987 (or 20980 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 12001579560 in words is "twelve billion, one million, five hundred seventy-nine thousand, five hundred sixty".