11900111109975 has 60 divisors (see below), whose sum is σ = 24047039384280. Its totient is φ = 5769750830400.

The previous prime is 11900111109911. The next prime is 11900111110003. The reversal of 11900111109975 is 57990111100911.

It is not a de Polignac number, because 11900111109975 - 2⁶ = 11900111109911 is a prime.

It is a super-2 number, since 2×11900111109975² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11900111109975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 267095820 + ... + 267140369.

It is an arithmetic number, because the mean of its divisors is an integer number (400783989738).

Almost surely, 2^{11900111109975} is an apocalyptic number.

11900111109975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11900111109975 is an abundant number, since it is smaller than the sum of its proper divisors (12146928274305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11900111109975 is a wasteful number, since it uses less digits than its factorization.

11900111109975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534236222 (or 534236208 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 45.

The spelling of 11900111109975 in words is "eleven trillion, nine hundred billion, one hundred eleven million, one hundred nine thousand, nine hundred seventy-five".