11172865874 has 4 divisors (see below), whose sum is σ = 16759298814. Its totient is φ = 5586432936.

The previous prime is 11172865867. The next prime is 11172865901. The reversal of 11172865874 is 47856827111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47856827111 = 38273 ⋅1250407.

It can be written as a sum of positive squares in only one way, i.e., 9272341849 + 1900524025 = 96293^2 + 43595^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2793216467 + ... + 2793216470.

Almost surely, 2^11172865874 is an apocalyptic number.

11172865874 is a deficient number, since it is larger than the sum of its proper divisors (5586432940).

11172865874 is an equidigital number, since it uses as much as digits as its factorization.

11172865874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586432939.

The product of its digits is 752640, while the sum is 50.

The spelling of 11172865874 in words is "eleven billion, one hundred seventy-two million, eight hundred sixty-five thousand, eight hundred seventy-four".