12939884560 has 40 divisors (see below), whose sum is σ = 31854954456. Its totient is φ = 4871485440.

The previous prime is 12939884549. The next prime is 12939884567. The reversal of 12939884560 is 6548893921.

It can be written as a sum of positive squares in 4 ways, for example, as 2325939984 + 10613944576 = 48228^2 + 103024^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12939884560² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12939884567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755951 + ... + 4758670.

Almost surely, 2^12939884560 is an apocalyptic number.

12939884560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12939884560 is an abundant number, since it is smaller than the sum of its proper divisors (18915069896).

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

12939884560 is a wasteful number, since it uses less digits than its factorization.

12939884560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514651 (or 9514645 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 12939884560 in words is "twelve billion, nine hundred thirty-nine million, eight hundred eighty-four thousand, five hundred sixty".