12508956877 has 2 divisors, whose sum is σ = 12508956878. Its totient is φ = 12508956876.

The previous prime is 12508956827. The next prime is 12508956923. The reversal of 12508956877 is 77865980521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12486051081 + 22905796 = 111741^2 + 4786^2 .

It is a cyclic number.

It is not a de Polignac number, because 12508956877 - 2¹⁹ = 12508432589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12508956827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254478438 + 6254478439.

It is an arithmetic number, because the mean of its divisors is an integer number (6254478439).

Almost surely, 2^12508956877 is an apocalyptic number.

It is an amenable number.

12508956877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12508956877 is an equidigital number, since it uses as much as digits as its factorization.

12508956877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 12508956877 in words is "twelve billion, five hundred eight million, nine hundred fifty-six thousand, eight hundred seventy-seven".