90091177922 has 8 divisors (see below), whose sum is σ = 136043725500. Its totient is φ = 44743269424.

The previous prime is 90091177921. The next prime is 90091177973. The reversal of 90091177922 is 22977119009.

It can be written as a sum of positive squares in 2 ways, for example, as 79727734321 + 10363443601 = 282361^2 + 101801^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90091177921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151159397 + ... + 151159992.

Almost surely, 2^90091177922 is an apocalyptic number.

90091177922 is a deficient number, since it is larger than the sum of its proper divisors (45952547578).

90091177922 is a wasteful number, since it uses less digits than its factorization.

90091177922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302319540.

The product of its (nonzero) digits is 142884, while the sum is 47.

The spelling of 90091177922 in words is "ninety billion, ninety-one million, one hundred seventy-seven thousand, nine hundred twenty-two".