12171776873 has 4 divisors (see below), whose sum is σ = 12289949568. Its totient is φ = 12053604180.

The previous prime is 12171776833. The next prime is 12171776879. The reversal of 12171776873 is 37867717121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12171776873 - 2⁶ = 12171776809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12171776879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59086193 + ... + 59086398.

It is an arithmetic number, because the mean of its divisors is an integer number (3072487392).

Almost surely, 2^12171776873 is an apocalyptic number.

It is an amenable number.

12171776873 is a deficient number, since it is larger than the sum of its proper divisors (118172695).

12171776873 is a wasteful number, since it uses less digits than its factorization.

12171776873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118172694.

The product of its digits is 691488, while the sum is 50.

The spelling of 12171776873 in words is "twelve billion, one hundred seventy-one million, seven hundred seventy-six thousand, eight hundred seventy-three".