90199665439168 has 14 divisors (see below), whose sum is σ = 178989961105976. Its totient is φ = 45099832719552.

The previous prime is 90199665439159. The next prime is 90199665439171. The reversal of 90199665439168 is 86193456699109.

It is a junction number, because it is equal to n+sod(n) for n = 90199665439094 and 90199665439103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704684886180 + ... + 704684886307.

Almost surely, 2^{90199665439168} is an apocalyptic number.

It is an amenable number.

90199665439168 is a deficient number, since it is larger than the sum of its proper divisors (88790295666808).

90199665439168 is a wasteful number, since it uses less digits than its factorization.

90199665439168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409369772499 (or 1409369772489 counting only the distinct ones).

The product of its (nonzero) digits is 680244480, while the sum is 76.

The spelling of 90199665439168 in words is "ninety trillion, one hundred ninety-nine billion, six hundred sixty-five million, four hundred thirty-nine thousand, one hundred sixty-eight".