309666486808 has 64 divisors (see below), whose sum is σ = 696248017920. Its totient is φ = 126242582400.

The previous prime is 309666486797. The next prime is 309666486827. The reversal of 309666486808 is 808684666903.

It is a self number, because there is not a number n which added to its sum of digits gives 309666486808.

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, 431028 + ... + 897283.

It is an arithmetic number, because the mean of its divisors is an integer number (10878875280).

Almost surely, 2^309666486808 is an apocalyptic number.

It is an amenable number.

309666486808 is an abundant number, since it is smaller than the sum of its proper divisors (386581531112).

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

309666486808 is a wasteful number, since it uses less digits than its factorization.

309666486808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328528 (or 1328524 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 64.

The spelling of 309666486808 in words is "three hundred nine billion, six hundred sixty-six million, four hundred eighty-six thousand, eight hundred eight".