11772811874 has 4 divisors (see below), whose sum is σ = 17659217814. Its totient is φ = 5886405936.

The previous prime is 11772811871. The next prime is 11772811907. The reversal of 11772811874 is 47811827711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11762920849 + 9891025 = 108457^2 + 3145^2 .

It is not an unprimeable number, because it can be changed into a prime (11772811871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2943202967 + ... + 2943202970.

Almost surely, 2^11772811874 is an apocalyptic number.

11772811874 is a deficient number, since it is larger than the sum of its proper divisors (5886405940).

11772811874 is an equidigital number, since it uses as much as digits as its factorization.

11772811874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886405939.

The product of its digits is 175616, while the sum is 47.

The spelling of 11772811874 in words is "eleven billion, seven hundred seventy-two million, eight hundred eleven thousand, eight hundred seventy-four".