686438662000812 has 24 divisors (see below), whose sum is σ = 1830503098669056. Its totient is φ = 196125332000208.

The previous prime is 686438662000787. The next prime is 686438662000823. The reversal of 686438662000812 is 218000266834686.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4085944416588 + ... + 4085944416755.

It is an arithmetic number, because the mean of its divisors is an integer number (76270962444544).

Almost surely, 2^{686438662000812} is an apocalyptic number.

It is an amenable number.

686438662000812 is an abundant number, since it is smaller than the sum of its proper divisors (1144064436668244).

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

686438662000812 is a wasteful number, since it uses less digits than its factorization.

686438662000812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171888833357 (or 8171888833355 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 60.

The spelling of 686438662000812 in words is "six hundred eighty-six trillion, four hundred thirty-eight billion, six hundred sixty-two million, eight hundred twelve", and thus it is an aban number.