90618698608 has 10 divisors (see below), whose sum is σ = 175573728584. Its totient is φ = 45309349296.

The previous prime is 90618698587. The next prime is 90618698609. The reversal of 90618698608 is 80689681609.

It is a super-2 number, since 2×90618698608² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90618698609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831834316 + ... + 2831834347.

Almost surely, 2^90618698608 is an apocalyptic number.

It is an amenable number.

90618698608 is a deficient number, since it is larger than the sum of its proper divisors (84955029976).

90618698608 is a wasteful number, since it uses less digits than its factorization.

90618698608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663668671 (or 5663668665 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 90618698608 in words is "ninety billion, six hundred eighteen million, six hundred ninety-eight thousand, six hundred eight".