90696405520 has 80 divisors (see below), whose sum is σ = 244944108288. Its totient is φ = 30586129920.

The previous prime is 90696405473. The next prime is 90696405521. The reversal of 90696405520 is 2550469609.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (90696405521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1293364 + ... + 1361683.

Almost surely, 2^90696405520 is an apocalyptic number.

It is an amenable number.

90696405520 is an abundant number, since it is smaller than the sum of its proper divisors (154247702768).

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

90696405520 is a wasteful number, since it uses less digits than its factorization.

90696405520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655128 (or 2655122 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 90696405520 in words is "ninety billion, six hundred ninety-six million, four hundred five thousand, five hundred twenty".