90779672280 has 64 divisors (see below), whose sum is σ = 297097113600. Its totient is φ = 22007192960.

The previous prime is 90779672273. The next prime is 90779672303. The reversal of 90779672280 is 8227697709.

It is a self number, because there is not a number n which added to its sum of digits gives 90779672280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34384920 + ... + 34387559.

It is an arithmetic number, because the mean of its divisors is an integer number (4642142400).

Almost surely, 2^90779672280 is an apocalyptic number.

It is an amenable number.

90779672280 is an abundant number, since it is smaller than the sum of its proper divisors (206317441320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90779672280 is a wasteful number, since it uses less digits than its factorization.

90779672280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68772504 (or 68772500 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 90779672280 in words is "ninety billion, seven hundred seventy-nine million, six hundred seventy-two thousand, two hundred eighty".