90864531405592 has 64 divisors (see below), whose sum is σ = 195400516147200. Its totient is φ = 38803863834240.

The previous prime is 90864531405587. The next prime is 90864531405601. The reversal of 90864531405592 is 29550413546809.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90864531405592.

It is a congruent number.

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, 51785634 + ... + 53511502.

It is an arithmetic number, because the mean of its divisors is an integer number (3053133064800).

Almost surely, 2^{90864531405592} is an apocalyptic number.

It is an amenable number.

90864531405592 is an abundant number, since it is smaller than the sum of its proper divisors (104535984741608).

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

90864531405592 is a wasteful number, since it uses less digits than its factorization.

90864531405592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729216 (or 1729212 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 61.

The spelling of 90864531405592 in words is "ninety trillion, eight hundred sixty-four billion, five hundred thirty-one million, four hundred five thousand, five hundred ninety-two".