12923349661 has 2 divisors, whose sum is σ = 12923349662. Its totient is φ = 12923349660.

The previous prime is 12923349631. The next prime is 12923349701. The reversal of 12923349661 is 16694332921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7749280900 + 5174068761 = 88030^2 + 71931^2 .

It is a cyclic number.

It is not a de Polignac number, because 12923349661 - 2³³ = 4333415069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12923349601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6461674830 + 6461674831.

It is an arithmetic number, because the mean of its divisors is an integer number (6461674831).

Almost surely, 2^12923349661 is an apocalyptic number.

It is an amenable number.

12923349661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12923349661 is an equidigital number, since it uses as much as digits as its factorization.

12923349661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 46.

The spelling of 12923349661 in words is "twelve billion, nine hundred twenty-three million, three hundred forty-nine thousand, six hundred sixty-one".