686325132815 has 16 divisors (see below), whose sum is σ = 941412495360. Its totient is φ = 470539648800.

The previous prime is 686325132793. The next prime is 686325132827. The reversal of 686325132815 is 518231523686.

It is not a de Polignac number, because 686325132815 - 2¹² = 686325128719 is a prime.

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, 1534511 + ... + 1930640.

It is an arithmetic number, because the mean of its divisors is an integer number (58838280960).

Almost surely, 2^686325132815 is an apocalyptic number.

686325132815 is a deficient number, since it is larger than the sum of its proper divisors (255087362545).

686325132815 is a wasteful number, since it uses less digits than its factorization.

686325132815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470822.

The product of its digits is 2073600, while the sum is 50.

The spelling of 686325132815 in words is "six hundred eighty-six billion, three hundred twenty-five million, one hundred thirty-two thousand, eight hundred fifteen".