90471758568 has 64 divisors (see below), whose sum is σ = 232473870720. Its totient is φ = 29319264000.

The previous prime is 90471758543. The next prime is 90471758581. The reversal of 90471758568 is 86585717409.

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, 1116133 + ... + 1194443.

It is an arithmetic number, because the mean of its divisors is an integer number (3632404230).

Almost surely, 2^90471758568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90471758568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116236935360).

90471758568 is an abundant number, since it is smaller than the sum of its proper divisors (142002112152).

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

90471758568 is a wasteful number, since it uses less digits than its factorization.

90471758568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79658 (or 79654 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 90471758568 in words is "ninety billion, four hundred seventy-one million, seven hundred fifty-eight thousand, five hundred sixty-eight".