12155719679 has 2 divisors, whose sum is σ = 12155719680. Its totient is φ = 12155719678.

The previous prime is 12155719657. The next prime is 12155719687. The reversal of 12155719679 is 97691755121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12155719679 - 2²⁸ = 11887284223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12155719679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12155719619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077859839 + 6077859840.

It is an arithmetic number, because the mean of its divisors is an integer number (6077859840).

Almost surely, 2^12155719679 is an apocalyptic number.

12155719679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12155719679 is an equidigital number, since it uses as much as digits as its factorization.

12155719679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 53.

The spelling of 12155719679 in words is "twelve billion, one hundred fifty-five million, seven hundred nineteen thousand, six hundred seventy-nine".