90517659769842 has 16 divisors (see below), whose sum is σ = 181381467384480. Its totient is φ = 30114861949152.

The previous prime is 90517659769787. The next prime is 90517659769897. The reversal of 90517659769842 is 24896795671509.

It is an interprime number because it is at equal distance from previous prime (90517659769787) and next prime (90517659769897).

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, 14422823467 + ... + 14422829742.

It is an arithmetic number, because the mean of its divisors is an integer number (11336341711530).

Almost surely, 2^{90517659769842} is an apocalyptic number.

90517659769842 is an abundant number, since it is smaller than the sum of its proper divisors (90863807614638).

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

90517659769842 is a wasteful number, since it uses less digits than its factorization.

90517659769842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28845653737.

The product of its (nonzero) digits is 2057529600, while the sum is 78.

The spelling of 90517659769842 in words is "ninety trillion, five hundred seventeen billion, six hundred fifty-nine million, seven hundred sixty-nine thousand, eight hundred forty-two".