12190691678749 has 2 divisors, whose sum is σ = 12190691678750. Its totient is φ = 12190691678748.

The previous prime is 12190691678731. The next prime is 12190691678783. The reversal of 12190691678749 is 94787619609121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8517163622724 + 3673528056025 = 2918418^2 + 1916645^2 .

It is a cyclic number.

It is not a de Polignac number, because 12190691678749 - 2⁹ = 12190691678237 is a prime.

It is a super-2 number, since 2×12190691678749² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12190691648749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6095345839374 + 6095345839375.

It is an arithmetic number, because the mean of its divisors is an integer number (6095345839375).

Almost surely, 2^{12190691678749} is an apocalyptic number.

It is an amenable number.

12190691678749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12190691678749 is an equidigital number, since it uses as much as digits as its factorization.

12190691678749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82301184, while the sum is 70.

The spelling of 12190691678749 in words is "twelve trillion, one hundred ninety billion, six hundred ninety-one million, six hundred seventy-eight thousand, seven hundred forty-nine".