12905930777 has 2 divisors, whose sum is σ = 12905930778. Its totient is φ = 12905930776.

The previous prime is 12905930773. The next prime is 12905930963. The reversal of 12905930777 is 77703950921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8875712521 + 4030218256 = 94211^2 + 63484^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905930777 - 2² = 12905930773 is a prime.

It is not a weakly prime, because it can be changed into another prime (12905930771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452965388 + 6452965389.

It is an arithmetic number, because the mean of its divisors is an integer number (6452965389).

Almost surely, 2^12905930777 is an apocalyptic number.

It is an amenable number.

12905930777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12905930777 is an equidigital number, since it uses as much as digits as its factorization.

12905930777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 50.

The spelling of 12905930777 in words is "twelve billion, nine hundred five million, nine hundred thirty thousand, seven hundred seventy-seven".