686411429256 has 112 divisors (see below), whose sum is σ = 2205313747200. Its totient is φ = 196117539552.

The previous prime is 686411429227. The next prime is 686411429261. The reversal of 686411429256 is 652924114686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 8366136 + ... + 8447783.

Almost surely, 2^686411429256 is an apocalyptic number.

It is an amenable number.

686411429256 is an abundant number, since it is smaller than the sum of its proper divisors (1518902317944).

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

686411429256 is a wasteful number, since it uses less digits than its factorization.

686411429256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813950 (or 16813931 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 686411429256 in words is "six hundred eighty-six billion, four hundred eleven million, four hundred twenty-nine thousand, two hundred fifty-six".