12191655005 has 16 divisors (see below), whose sum is σ = 15095324160. Its totient is φ = 9447378432.

The previous prime is 12191654977. The next prime is 12191655019. The reversal of 12191655005 is 50055619121.

It is a cyclic number.

It is not a de Polignac number, because 12191655005 - 2⁸ = 12191654749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244625 + ... + 290214.

It is an arithmetic number, because the mean of its divisors is an integer number (943457760).

Almost surely, 2^12191655005 is an apocalyptic number.

It is an amenable number.

12191655005 is a deficient number, since it is larger than the sum of its proper divisors (2903669155).

12191655005 is an equidigital number, since it uses as much as digits as its factorization.

12191655005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534988.

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 12191655005 in words is "twelve billion, one hundred ninety-one million, six hundred fifty-five thousand, five".