90285993832 has 16 divisors (see below), whose sum is σ = 169897384260. Its totient is φ = 44980024704.

The previous prime is 90285993829. The next prime is 90285993883. The reversal of 90285993832 is 23839958209.

It can be written as a sum of positive squares in 2 ways, for example, as 87785393796 + 2500600036 = 296286^2 + 50006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20369173 + ... + 20373604.

Almost surely, 2^90285993832 is an apocalyptic number.

It is an amenable number.

90285993832 is a deficient number, since it is larger than the sum of its proper divisors (79611390428).

90285993832 is a wasteful number, since it uses less digits than its factorization.

90285993832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40743060 (or 40743056 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 90285993832 in words is "ninety billion, two hundred eighty-five million, nine hundred ninety-three thousand, eight hundred thirty-two".