12146370661 has 2 divisors, whose sum is σ = 12146370662. Its totient is φ = 12146370660.

The previous prime is 12146370629. The next prime is 12146370667. The reversal of 12146370661 is 16607364121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7535281636 + 4611089025 = 86806^2 + 67905^2 .

It is a cyclic number.

It is not a de Polignac number, because 12146370661 - 2⁵ = 12146370629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12146370661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12146370667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6073185330 + 6073185331.

It is an arithmetic number, because the mean of its divisors is an integer number (6073185331).

Almost surely, 2^12146370661 is an apocalyptic number.

It is an amenable number.

12146370661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12146370661 is an equidigital number, since it uses as much as digits as its factorization.

12146370661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 12146370661 in words is "twelve billion, one hundred forty-six million, three hundred seventy thousand, six hundred sixty-one".