12261555063167 has 4 divisors (see below), whose sum is σ = 12263614796160. Its totient is φ = 12259495330176.

The previous prime is 12261555063007. The next prime is 12261555063187. The reversal of 12261555063167 is 76136055516221.

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

It is a cyclic number.

It is not a de Polignac number, because 12261555063167 - 2¹⁰ = 12261555062143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261555063187) 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, 1029857567 + ... + 1029869472.

It is an arithmetic number, because the mean of its divisors is an integer number (3065903699040).

Almost surely, 2^{12261555063167} is an apocalyptic number.

12261555063167 is a deficient number, since it is larger than the sum of its proper divisors (2059732993).

12261555063167 is an equidigital number, since it uses as much as digits as its factorization.

12261555063167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059732992.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 12261555063167 in words is "twelve trillion, two hundred sixty-one billion, five hundred fifty-five million, sixty-three thousand, one hundred sixty-seven".