12515828520678 has 32 divisors (see below), whose sum is σ = 29380786646784. Its totient is φ = 3479303680992.

The previous prime is 12515828520659. The next prime is 12515828520709. The reversal of 12515828520678 is 87602582851521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4026970300 + ... + 4026973407.

It is an arithmetic number, because the mean of its divisors is an integer number (918149582712).

Almost surely, 2^{12515828520678} is an apocalyptic number.

12515828520678 is an abundant number, since it is smaller than the sum of its proper divisors (16864958126106).

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

12515828520678 is a wasteful number, since it uses less digits than its factorization.

12515828520678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053943756.

The product of its (nonzero) digits is 21504000, while the sum is 60.

The spelling of 12515828520678 in words is "twelve trillion, five hundred fifteen billion, eight hundred twenty-eight million, five hundred twenty thousand, six hundred seventy-eight".