90579581983 has 8 divisors (see below), whose sum is σ = 99151342416. Its totient is φ = 82064030400.

The previous prime is 90579581957. The next prime is 90579582011. The reversal of 90579581983 is 38918597509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-90579581983 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 (90579581903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14048838 + ... + 14055283.

It is an arithmetic number, because the mean of its divisors is an integer number (12393917802).

Almost surely, 2^90579581983 is an apocalyptic number.

90579581983 is a deficient number, since it is larger than the sum of its proper divisors (8571760433).

90579581983 is a wasteful number, since it uses less digits than its factorization.

90579581983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28104425.

The product of its (nonzero) digits is 24494400, while the sum is 64.

The spelling of 90579581983 in words is "ninety billion, five hundred seventy-nine million, five hundred eighty-one thousand, nine hundred eighty-three".