18368539017204 has 48 divisors (see below), whose sum is σ = 44246476606976. Its totient is φ = 5924802931200.

The previous prime is 18368539016981. The next prime is 18368539017217. The reversal of 18368539017204 is 40271093586381.

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, 1939824 + ... + 6363960.

It is a 1-persistent number, because it is pandigital, but 2⋅18368539017204 = 36737078034408 is not.

Almost surely, 2^{18368539017204} is an apocalyptic number.

It is an amenable number.

18368539017204 is an abundant number, since it is smaller than the sum of its proper divisors (25877937589772).

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

18368539017204 is a wasteful number, since it uses less digits than its factorization.

18368539017204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435336 (or 4435334 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 18368539017204 in words is "eighteen trillion, three hundred sixty-eight billion, five hundred thirty-nine million, seventeen thousand, two hundred four".