686565078323113 has 4 divisors (see below), whose sum is σ = 748980085443408. Its totient is φ = 624150071202820.

The previous prime is 686565078323063. The next prime is 686565078323123. The reversal of 686565078323113 is 311323870565686.

It is a happy number.

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 686565078323113 - 2⁴¹ = 684366055067561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686565078323123) 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, 31207503560131 + ... + 31207503560152.

It is an arithmetic number, because the mean of its divisors is an integer number (187245021360852).

Almost surely, 2^{686565078323113} is an apocalyptic number.

It is an amenable number.

686565078323113 is a deficient number, since it is larger than the sum of its proper divisors (62415007120295).

686565078323113 is a wasteful number, since it uses less digits than its factorization.

686565078323113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62415007120294.

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 686565078323113 in words is "six hundred eighty-six trillion, five hundred sixty-five billion, seventy-eight million, three hundred twenty-three thousand, one hundred thirteen".