11111009975 has 24 divisors (see below), whose sum is σ = 15349121760. Its totient is φ = 7922113920.

The previous prime is 11111009969. The next prime is 11111010037. The reversal of 11111009975 is 57990011111.

11111009975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111009975 - 2⁶ = 11111009911 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 580019 + ... + 598868.

It is an arithmetic number, because the mean of its divisors is an integer number (639546740).

Almost surely, 2^11111009975 is an apocalyptic number.

11111009975 is a deficient number, since it is larger than the sum of its proper divisors (4238111785).

11111009975 is a wasteful number, since it uses less digits than its factorization.

11111009975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178939 (or 1178934 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 35.

The spelling of 11111009975 in words is "eleven billion, one hundred eleven million, nine thousand, nine hundred seventy-five".