18681673966942 has 16 divisors (see below), whose sum is σ = 32059905827040. Its totient is φ = 7997886943488.

The previous prime is 18681673966939. The next prime is 18681673966961. The reversal of 18681673966942 is 24966937618681.

It is a super-3 number, since 3×18681673966942³ (a number of 41 digits) contains 333 as substring.

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, 712049467 + ... + 712075702.

It is an arithmetic number, because the mean of its divisors is an integer number (2003744114190).

Almost surely, 2^{18681673966942} is an apocalyptic number.

18681673966942 is a deficient number, since it is larger than the sum of its proper divisors (13378231860098).

18681673966942 is a wasteful number, since it uses less digits than its factorization.

18681673966942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424126115.

The product of its digits is 1128701952, while the sum is 76.

The spelling of 18681673966942 in words is "eighteen trillion, six hundred eighty-one billion, six hundred seventy-three million, nine hundred sixty-six thousand, nine hundred forty-two".