12105172766 has 16 divisors (see below), whose sum is σ = 18192915360. Its totient is φ = 6040880640.

The previous prime is 12105172763. The next prime is 12105172777. The reversal of 12105172766 is 66727150121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105172763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3117146 + ... + 3121026.

It is an arithmetic number, because the mean of its divisors is an integer number (1137057210).

Almost surely, 2^12105172766 is an apocalyptic number.

12105172766 is a deficient number, since it is larger than the sum of its proper divisors (6087742594).

12105172766 is a wasteful number, since it uses less digits than its factorization.

12105172766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 12105172766 in words is "twelve billion, one hundred five million, one hundred seventy-two thousand, seven hundred sixty-six".