90708691968 has 176 divisors, whose sum is σ = 269291201760. Its totient is φ = 30162419712.

The previous prime is 90708691921. The next prime is 90708691991. The reversal of 90708691968 is 86919680709.

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, 11967796 + ... + 11975372.

Almost surely, 2^90708691968 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 90708691968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134645600880).

90708691968 is an abundant number, since it is smaller than the sum of its proper divisors (178582509792).

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

90708691968 is a wasteful number, since it uses less digits than its factorization.

90708691968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039 (or 8015 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The spelling of 90708691968 in words is "ninety billion, seven hundred eight million, six hundred ninety-one thousand, nine hundred sixty-eight".