90617793140 has 48 divisors (see below), whose sum is σ = 230275809792. Its totient is φ = 29241371136.

The previous prime is 90617793137. The next prime is 90617793187. The reversal of 90617793140 is 4139771609.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19034972 + ... + 19039731.

It is an arithmetic number, because the mean of its divisors is an integer number (4797412704).

Almost surely, 2^90617793140 is an apocalyptic number.

It is an amenable number.

90617793140 is an abundant number, since it is smaller than the sum of its proper divisors (139658016652).

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

90617793140 is a wasteful number, since it uses less digits than its factorization.

90617793140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38074736 (or 38074734 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The spelling of 90617793140 in words is "ninety billion, six hundred seventeen million, seven hundred ninety-three thousand, one hundred forty".