12515828520679 has 16 divisors (see below), whose sum is σ = 13794976290816. Its totient is φ = 11260248249600.

The previous prime is 12515828520659. The next prime is 12515828520709. The reversal of 12515828520679 is 97602582851521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12515828520679 - 2¹³ = 12515828512487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515828520659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26189584 + ... + 26663194.

It is an arithmetic number, because the mean of its divisors is an integer number (862186018176).

Almost surely, 2^{12515828520679} is an apocalyptic number.

12515828520679 is a deficient number, since it is larger than the sum of its proper divisors (1279147770137).

12515828520679 is a wasteful number, since it uses less digits than its factorization.

12515828520679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498486.

The product of its (nonzero) digits is 24192000, while the sum is 61.

The spelling of 12515828520679 in words is "twelve trillion, five hundred fifteen billion, eight hundred twenty-eight million, five hundred twenty thousand, six hundred seventy-nine".