90689216496508 has 24 divisors (see below), whose sum is σ = 182101056246144. Its totient is φ = 38711959230000.

The previous prime is 90689216496409. The next prime is 90689216496583. The reversal of 90689216496508 is 80569461298609.

It is a congruent number.

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, 6451986178 + ... + 6452000233.

It is an arithmetic number, because the mean of its divisors is an integer number (7587544010256).

Almost surely, 2^{90689216496508} is an apocalyptic number.

It is an amenable number.

90689216496508 is an abundant number, since it is smaller than the sum of its proper divisors (91411839749636).

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

90689216496508 is a wasteful number, since it uses less digits than its factorization.

90689216496508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903986673 (or 12903986671 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 73.

The spelling of 90689216496508 in words is "ninety trillion, six hundred eighty-nine billion, two hundred sixteen million, four hundred ninety-six thousand, five hundred eight".