12145694137 has 2 divisors, whose sum is σ = 12145694138. Its totient is φ = 12145694136.

The previous prime is 12145694123. The next prime is 12145694291. The reversal of 12145694137 is 73149654121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10718667961 + 1427026176 = 103531^2 + 37776^2 .

It is a cyclic number.

It is not a de Polignac number, because 12145694137 - 2⁷ = 12145694009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12145694093 and 12145694102.

It is not a weakly prime, because it can be changed into another prime (12145694117) 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 as a sum of consecutive naturals, namely, 6072847068 + 6072847069.

It is an arithmetic number, because the mean of its divisors is an integer number (6072847069).

Almost surely, 2^12145694137 is an apocalyptic number.

It is an amenable number.

12145694137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145694137 is an equidigital number, since it uses as much as digits as its factorization.

12145694137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The spelling of 12145694137 in words is "twelve billion, one hundred forty-five million, six hundred ninety-four thousand, one hundred thirty-seven".