90007617879 has 10 divisors (see below), whose sum is σ = 134455824360. Its totient is φ = 60005078532.

The previous prime is 90007617871. The next prime is 90007617883. The reversal of 90007617879 is 97871670009.

It is not a de Polignac number, because 90007617879 - 2³ = 90007617871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90007617871) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 555602499 + ... + 555602660.

It is an arithmetic number, because the mean of its divisors is an integer number (13445582436).

Almost surely, 2^90007617879 is an apocalyptic number.

90007617879 is a deficient number, since it is larger than the sum of its proper divisors (44448206481).

90007617879 is a wasteful number, since it uses less digits than its factorization.

90007617879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111205171 (or 1111205162 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 90007617879 in words is "ninety billion, seven million, six hundred seventeen thousand, eight hundred seventy-nine".