90369635979 has 16 divisors (see below), whose sum is σ = 139761429248. Its totient is φ = 50869048032.

The previous prime is 90369635969. The next prime is 90369636013. The reversal of 90369635979 is 97953696309.

It is not a de Polignac number, because 90369635979 - 2¹⁵ = 90369603211 is a prime.

It is a super-2 number, since 2×90369635979² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90369635969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32112892 + ... + 32115705.

It is an arithmetic number, because the mean of its divisors is an integer number (8735089328).

Almost surely, 2^90369635979 is an apocalyptic number.

90369635979 is a deficient number, since it is larger than the sum of its proper divisors (49391793269).

90369635979 is a wasteful number, since it uses less digits than its factorization.

90369635979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64228674.

The product of its (nonzero) digits is 74401740, while the sum is 66.

The spelling of 90369635979 in words is "ninety billion, three hundred sixty-nine million, six hundred thirty-five thousand, nine hundred seventy-nine".