308685668636 has 12 divisors (see below), whose sum is σ = 571976386128. Its totient is φ = 145263844032.

The previous prime is 308685668609. The next prime is 308685668651. The reversal of 308685668636 is 636866586803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269747496 + ... + 2269747631.

It is an arithmetic number, because the mean of its divisors is an integer number (47664698844).

Almost surely, 2^308685668636 is an apocalyptic number.

It is an amenable number.

308685668636 is a deficient number, since it is larger than the sum of its proper divisors (263290717492).

308685668636 is a wasteful number, since it uses less digits than its factorization.

308685668636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539495148 (or 4539495146 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 65.

The spelling of 308685668636 in words is "three hundred eight billion, six hundred eighty-five million, six hundred sixty-eight thousand, six hundred thirty-six".