15312086513 has 4 divisors (see below), whose sum is σ = 15318843120. Its totient is φ = 15305329908.

The previous prime is 15312086509. The next prime is 15312086527. The reversal of 15312086513 is 31568021351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15312086513 - 2² = 15312086509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15312286513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374903 + ... + 3379436.

It is an arithmetic number, because the mean of its divisors is an integer number (3829710780).

Almost surely, 2^15312086513 is an apocalyptic number.

It is an amenable number.

15312086513 is a deficient number, since it is larger than the sum of its proper divisors (6756607).

15312086513 is an equidigital number, since it uses as much as digits as its factorization.

15312086513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756606.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 15312086513 in words is "fifteen billion, three hundred twelve million, eighty-six thousand, five hundred thirteen".