90965447717 has 4 divisors (see below), whose sum is σ = 95753102880. Its totient is φ = 86177792556.

The previous prime is 90965447707. The next prime is 90965447767. The reversal of 90965447717 is 71774456909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90965447717 - 2¹⁶ = 90965382181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90965447707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2393827553 + ... + 2393827590.

It is an arithmetic number, because the mean of its divisors is an integer number (23938275720).

Almost surely, 2^90965447717 is an apocalyptic number.

It is an amenable number.

90965447717 is a deficient number, since it is larger than the sum of its proper divisors (4787655163).

90965447717 is a wasteful number, since it uses less digits than its factorization.

90965447717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787655162.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 90965447717 in words is "ninety billion, nine hundred sixty-five million, four hundred forty-seven thousand, seven hundred seventeen".