18668683355 has 32 divisors (see below), whose sum is σ = 27114753024. Its totient is φ = 12062007936.

The previous prime is 18668683337. The next prime is 18668683367. The reversal of 18668683355 is 55338686681.

It is a cyclic number.

It is not a de Polignac number, because 18668683355 - 2¹² = 18668679259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18668683294 and 18668683303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119132 + ... + 227001.

It is an arithmetic number, because the mean of its divisors is an integer number (847336032).

Almost surely, 2^18668683355 is an apocalyptic number.

18668683355 is a deficient number, since it is larger than the sum of its proper divisors (8446069669).

18668683355 is a wasteful number, since it uses less digits than its factorization.

18668683355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346235.

The product of its digits is 24883200, while the sum is 59.

The spelling of 18668683355 in words is "eighteen billion, six hundred sixty-eight million, six hundred eighty-three thousand, three hundred fifty-five".