308685206668 has 6 divisors (see below), whose sum is σ = 540199111676. Its totient is φ = 154342603332.

The previous prime is 308685206653. The next prime is 308685206681. The reversal of 308685206668 is 866602586803.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38585650830 + ... + 38585650837.

Almost surely, 2^308685206668 is an apocalyptic number.

It is an amenable number.

308685206668 is a deficient number, since it is larger than the sum of its proper divisors (231513905008).

308685206668 is a wasteful number, since it uses less digits than its factorization.

308685206668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77171301671 (or 77171301669 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 308685206668 in words is "three hundred eight billion, six hundred eighty-five million, two hundred six thousand, six hundred sixty-eight".