18423992861168 has 10 divisors (see below), whose sum is σ = 35696486168544. Its totient is φ = 9211996430576.

The previous prime is 18423992861081. The next prime is 18423992861173. The reversal of 18423992861168 is 86116829932481.

It is a junction number, because it is equal to n+sod(n) for n = 18423992861098 and 18423992861107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575749776896 + ... + 575749776927.

Almost surely, 2^{18423992861168} is an apocalyptic number.

It is an amenable number.

18423992861168 is a deficient number, since it is larger than the sum of its proper divisors (17272493307376).

18423992861168 is a wasteful number, since it uses less digits than its factorization.

18423992861168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151499553831 (or 1151499553825 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 68.

The spelling of 18423992861168 in words is "eighteen trillion, four hundred twenty-three billion, nine hundred ninety-two million, eight hundred sixty-one thousand, one hundred sixty-eight".