90868624579 has 4 divisors (see below), whose sum is σ = 90881856400. Its totient is φ = 90855392760.

The previous prime is 90868624547. The next prime is 90868624589. The reversal of 90868624579 is 97542686809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90868624579 - 2⁵ = 90868624547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90868624579.

It is not an unprimeable number, because it can be changed into a prime (90868624529) 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, 6605604 + ... + 6619345.

It is an arithmetic number, because the mean of its divisors is an integer number (22720464100).

Almost surely, 2^90868624579 is an apocalyptic number.

90868624579 is a deficient number, since it is larger than the sum of its proper divisors (13231821).

90868624579 is a wasteful number, since it uses less digits than its factorization.

90868624579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231820.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 90868624579 in words is "ninety billion, eight hundred sixty-eight million, six hundred twenty-four thousand, five hundred seventy-nine".