90577226640 has 80 divisors (see below), whose sum is σ = 280858148928. Its totient is φ = 24148013568.

The previous prime is 90577226611. The next prime is 90577226687. The reversal of 90577226640 is 4662277509.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 90577226640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983862 + ... + 1071978.

Almost surely, 2^90577226640 is an apocalyptic number.

It is an amenable number.

90577226640 is an abundant number, since it is smaller than the sum of its proper divisors (190280922288).

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

90577226640 is a wasteful number, since it uses less digits than its factorization.

90577226640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92416 (or 92410 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 90577226640 in words is "ninety billion, five hundred seventy-seven million, two hundred twenty-six thousand, six hundred forty".