90779646277 has 4 divisors (see below), whose sum is σ = 90803149920. Its totient is φ = 90756142636.

The previous prime is 90779646259. The next prime is 90779646317. The reversal of 90779646277 is 77264697709.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90779646277 - 2⁷ = 90779646149 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 (90779646227) 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, 11746027 + ... + 11753752.

It is an arithmetic number, because the mean of its divisors is an integer number (22700787480).

Almost surely, 2^90779646277 is an apocalyptic number.

It is an amenable number.

90779646277 is a deficient number, since it is larger than the sum of its proper divisors (23503643).

90779646277 is a wasteful number, since it uses less digits than its factorization.

90779646277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23503642.

The product of its (nonzero) digits is 56010528, while the sum is 64.

The spelling of 90779646277 in words is "ninety billion, seven hundred seventy-nine million, six hundred forty-six thousand, two hundred seventy-seven".