12167555766 has 16 divisors (see below), whose sum is σ = 24336651504. Its totient is φ = 4055595264.

The previous prime is 12167555761. The next prime is 12167555779. The reversal of 12167555766 is 66755576121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12167555761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55806 + ... + 165678.

It is an arithmetic number, because the mean of its divisors is an integer number (1521040719).

Almost surely, 2^12167555766 is an apocalyptic number.

12167555766 is an abundant number, since it is smaller than the sum of its proper divisors (12169095738).

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

12167555766 is a wasteful number, since it uses less digits than its factorization.

12167555766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128335.

The product of its digits is 2646000, while the sum is 51.

The spelling of 12167555766 in words is "twelve billion, one hundred sixty-seven million, five hundred fifty-five thousand, seven hundred sixty-six".