12091366579 has 2 divisors, whose sum is σ = 12091366580. Its totient is φ = 12091366578.

The previous prime is 12091366561. The next prime is 12091366667. The reversal of 12091366579 is 97566319021.

It is a weak prime.

It is an emirp because it is prime and its reverse (97566319021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12091366579 - 2²⁵ = 12057812147 is a prime.

It is a super-2 number, since 2×12091366579² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12091666579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045683289 + 6045683290.

It is an arithmetic number, because the mean of its divisors is an integer number (6045683290).

Almost surely, 2^12091366579 is an apocalyptic number.

12091366579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12091366579 is an equidigital number, since it uses as much as digits as its factorization.

12091366579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 49.

The spelling of 12091366579 in words is "twelve billion, ninety-one million, three hundred sixty-six thousand, five hundred seventy-nine".