12366552191 has 8 divisors (see below), whose sum is σ = 14461881984. Its totient is φ = 10353392280.

The previous prime is 12366552137. The next prime is 12366552223. The reversal of 12366552191 is 19125566321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12366552191 - 2⁶ = 12366552127 is a prime.

It is a super-2 number, since 2×12366552191² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12366552101) 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, 20542145 + ... + 20542746.

It is an arithmetic number, because the mean of its divisors is an integer number (1807735248).

Almost surely, 2^12366552191 is an apocalyptic number.

12366552191 is a deficient number, since it is larger than the sum of its proper divisors (2095329793).

12366552191 is an equidigital number, since it uses as much as digits as its factorization.

12366552191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41084941.

The product of its digits is 97200, while the sum is 41.

The spelling of 12366552191 in words is "twelve billion, three hundred sixty-six million, five hundred fifty-two thousand, one hundred ninety-one".