991116753 has 16 divisors (see below), whose sum is σ = 1443403200. Its totient is φ = 599935680.

The previous prime is 991116689. The next prime is 991116757. The reversal of 991116753 is 357611199.

It is not a de Polignac number, because 991116753 - 2⁶ = 991116689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (991116757) 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, 9243 + ... + 45471.

It is an arithmetic number, because the mean of its divisors is an integer number (90212700).

Almost surely, 2^991116753 is an apocalyptic number.

It is an amenable number.

991116753 is a deficient number, since it is larger than the sum of its proper divisors (452286447).

991116753 is a wasteful number, since it uses less digits than its factorization.

991116753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37072.

The product of its digits is 51030, while the sum is 42.

The square root of 991116753 is about 31482.0068134165. The cubic root of 991116753 is about 997.0301061288.

The spelling of 991116753 in words is "nine hundred ninety-one million, one hundred sixteen thousand, seven hundred fifty-three".