90767884079 has 4 divisors (see below), whose sum is σ = 91649125776. Its totient is φ = 89886642384.

The previous prime is 90767884063. The next prime is 90767884087. The reversal of 90767884079 is 97048876709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97048876709 = 383 ⋅253391323.

It is a cyclic number.

It is not a de Polignac number, because 90767884079 - 2⁴ = 90767884063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90767884019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440620694 + ... + 440620899.

It is an arithmetic number, because the mean of its divisors is an integer number (22912281444).

Almost surely, 2^90767884079 is an apocalyptic number.

90767884079 is a deficient number, since it is larger than the sum of its proper divisors (881241697).

90767884079 is a wasteful number, since it uses less digits than its factorization.

90767884079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881241696.

The product of its (nonzero) digits is 42674688, while the sum is 65.

The spelling of 90767884079 in words is "ninety billion, seven hundred sixty-seven million, eight hundred eighty-four thousand, seventy-nine".