90685571953 has 8 divisors (see below), whose sum is σ = 96556445280. Its totient is φ = 84874301760.

The previous prime is 90685571929. The next prime is 90685571971. The reversal of 90685571953 is 35917558609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90685571953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90685571983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14897643 + ... + 14903728.

It is an arithmetic number, because the mean of its divisors is an integer number (12069555660).

Almost surely, 2^90685571953 is an apocalyptic number.

It is an amenable number.

90685571953 is a deficient number, since it is larger than the sum of its proper divisors (5870873327).

90685571953 is a wasteful number, since it uses less digits than its factorization.

90685571953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29801567.

The product of its (nonzero) digits is 10206000, while the sum is 58.

The spelling of 90685571953 in words is "ninety billion, six hundred eighty-five million, five hundred seventy-one thousand, nine hundred fifty-three".