18368683501685 has 16 divisors (see below), whose sum is σ = 24046371970560. Its totient is φ = 13358989554240.

The previous prime is 18368683501561. The next prime is 18368683501697. The reversal of 18368683501685 is 58610538686381.

It is not a de Polignac number, because 18368683501685 - 2⁸ = 18368683501429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18133724 + ... + 19119866.

It is an arithmetic number, because the mean of its divisors is an integer number (1502898248160).

Almost surely, 2^{18368683501685} is an apocalyptic number.

It is an amenable number.

18368683501685 is a deficient number, since it is larger than the sum of its proper divisors (5677688468875).

18368683501685 is a wasteful number, since it uses less digits than its factorization.

18368683501685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324828.

The product of its (nonzero) digits is 199065600, while the sum is 68.

The spelling of 18368683501685 in words is "eighteen trillion, three hundred sixty-eight billion, six hundred eighty-three million, five hundred one thousand, six hundred eighty-five".