18665916364042 has 8 divisors (see below), whose sum is σ = 28059347278656. Its totient is φ = 9312800604492.

The previous prime is 18665916363979. The next prime is 18665916364133. The reversal of 18665916364042 is 24046361956681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10078787608 + ... + 10078789459.

It is an arithmetic number, because the mean of its divisors is an integer number (3507418409832).

Almost surely, 2^{18665916364042} is an apocalyptic number.

18665916364042 is a deficient number, since it is larger than the sum of its proper divisors (9393430914614).

18665916364042 is a wasteful number, since it uses less digits than its factorization.

18665916364042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20157577532.

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 18665916364042 in words is "eighteen trillion, six hundred sixty-five billion, nine hundred sixteen million, three hundred sixty-four thousand, forty-two".