90779433047 has 16 divisors (see below), whose sum is σ = 93603279840. Its totient is φ = 88003843200.

The previous prime is 90779432983. The next prime is 90779433071. The reversal of 90779433047 is 74033497709.

It is a cyclic number.

It is not a de Polignac number, because 90779433047 - 2⁶ = 90779432983 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 90779433047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90779430047) 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, 2110229 + ... + 2152817.

It is an arithmetic number, because the mean of its divisors is an integer number (5850204990).

Almost surely, 2^90779433047 is an apocalyptic number.

90779433047 is a deficient number, since it is larger than the sum of its proper divisors (2823846793).

90779433047 is a wasteful number, since it uses less digits than its factorization.

90779433047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43154.

The product of its (nonzero) digits is 4000752, while the sum is 53.

The spelling of 90779433047 in words is "ninety billion, seven hundred seventy-nine million, four hundred thirty-three thousand, forty-seven".