90155995639317 has 12 divisors (see below), whose sum is σ = 130453392413344. Its totient is φ = 59998736148840.

The previous prime is 90155995639219. The next prime is 90155995639357. The reversal of 90155995639317 is 71393659955109.

90155995639317 is a `hidden beast` number, since 9 + 0 + 1 + 5 + 59 + 9 + 563 + 9 + 3 + 1 + 7 = 666.

It is not a de Polignac number, because 90155995639317 - 2²⁰ = 90155994590741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90155995639357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8771739913 + ... + 8771750190.

Almost surely, 2^{90155995639317} is an apocalyptic number.

It is an amenable number.

90155995639317 is a deficient number, since it is larger than the sum of its proper divisors (40297396774027).

90155995639317 is a wasteful number, since it uses less digits than its factorization.

90155995639317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17543490680 (or 17543490677 counting only the distinct ones).

The product of its (nonzero) digits is 310007250, while the sum is 72.

The spelling of 90155995639317 in words is "ninety trillion, one hundred fifty-five billion, nine hundred ninety-five million, six hundred thirty-nine thousand, three hundred seventeen".