90718868568 has 16 divisors (see below), whose sum is σ = 226797171480. Its totient is φ = 30239622848.

The previous prime is 90718868533. The next prime is 90718868573. The reversal of 90718868568 is 86586881709.

It is a super-2 number, since 2×90718868568² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90718868499 and 90718868508.

It is a congruent number.

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, 1889976405 + ... + 1889976452.

Almost surely, 2^90718868568 is an apocalyptic number.

It is an amenable number.

90718868568 is an abundant number, since it is smaller than the sum of its proper divisors (136078302912).

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

90718868568 is a wasteful number, since it uses less digits than its factorization.

90718868568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779952866 (or 3779952862 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 66.

The spelling of 90718868568 in words is "ninety billion, seven hundred eighteen million, eight hundred sixty-eight thousand, five hundred sixty-eight".