90977282538 has 16 divisors (see below), whose sum is σ = 186872256480. Its totient is φ = 29506145616.

The previous prime is 90977282507. The next prime is 90977282587. The reversal of 90977282538 is 83528277909.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204903568 + ... + 204904011.

It is an arithmetic number, because the mean of its divisors is an integer number (11679516030).

Almost surely, 2^90977282538 is an apocalyptic number.

90977282538 is an abundant number, since it is smaller than the sum of its proper divisors (95894973942).

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

90977282538 is a wasteful number, since it uses less digits than its factorization.

90977282538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409807621.

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 90977282538 in words is "ninety billion, nine hundred seventy-seven million, two hundred eighty-two thousand, five hundred thirty-eight".