12538931342882 has 72 divisors (see below), whose sum is σ = 23387283023580. Its totient is φ = 5021150500800.

The previous prime is 12538931342881. The next prime is 12538931342909. The reversal of 12538931342882 is 28824313983521.

12538931342882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12347359682161 + 191571660721 = 3513881^2 + 437689^2 .

It is not an unprimeable number, because it can be changed into a prime (12538931342881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 435632 + ... + 5026692.

Almost surely, 2^{12538931342882} is an apocalyptic number.

12538931342882 is a deficient number, since it is larger than the sum of its proper divisors (10848351680698).

12538931342882 is a wasteful number, since it uses less digits than its factorization.

12538931342882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591168 (or 4591130 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 59.

The spelling of 12538931342882 in words is "twelve trillion, five hundred thirty-eight billion, nine hundred thirty-one million, three hundred forty-two thousand, eight hundred eighty-two".