18550339768 has 32 divisors (see below), whose sum is σ = 36647730000. Its totient is φ = 8778551040.

The previous prime is 18550339663. The next prime is 18550339777. The reversal of 18550339768 is 86793305581.

It is a congruent number.

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, 101278 + ... + 217618.

Almost surely, 2^18550339768 is an apocalyptic number.

It is an amenable number.

18550339768 is a deficient number, since it is larger than the sum of its proper divisors (18097390232).

18550339768 is a wasteful number, since it uses less digits than its factorization.

18550339768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117415 (or 117411 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 18550339768 in words is "eighteen billion, five hundred fifty million, three hundred thirty-nine thousand, seven hundred sixty-eight".