9717599880949 has 4 divisors (see below), whose sum is σ = 9781954847200. Its totient is φ = 9653244914700.

The previous prime is 9717599880917. The next prime is 9717599880959. The reversal of 9717599880949 is 9490889957179.

It is a happy number.

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 9717599880949 - 2⁵ = 9717599880917 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 (9717599880959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32177482899 + ... + 32177483200.

It is an arithmetic number, because the mean of its divisors is an integer number (2445488711800).

Almost surely, 2^{9717599880949} is an apocalyptic number.

It is an amenable number.

9717599880949 is a deficient number, since it is larger than the sum of its proper divisors (64354966251).

9717599880949 is a wasteful number, since it uses less digits than its factorization.

9717599880949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64354966250.

The product of its (nonzero) digits is 3703553280, while the sum is 85.

The spelling of 9717599880949 in words is "nine trillion, seven hundred seventeen billion, five hundred ninety-nine million, eight hundred eighty thousand, nine hundred forty-nine".