12515827878888 has 16 divisors (see below), whose sum is σ = 31289569697280. Its totient is φ = 4171942626288.

The previous prime is 12515827878823. The next prime is 12515827878889. The reversal of 12515827878888 is 88887872851521.

It is a super-2 number, since 2×12515827878888² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12515827878889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260746414120 + ... + 260746414167.

It is an arithmetic number, because the mean of its divisors is an integer number (1955598106080).

Almost surely, 2^{12515827878888} is an apocalyptic number.

It is an amenable number.

12515827878888 is an abundant number, since it is smaller than the sum of its proper divisors (18773741818392).

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

12515827878888 is a wasteful number, since it uses less digits than its factorization.

12515827878888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521492828296 (or 521492828292 counting only the distinct ones).

The product of its digits is 1284505600, while the sum is 78.

The spelling of 12515827878888 in words is "twelve trillion, five hundred fifteen billion, eight hundred twenty-seven million, eight hundred seventy-eight thousand, eight hundred eighty-eight".