12877752409 has 2 divisors, whose sum is σ = 12877752410. Its totient is φ = 12877752408.

The previous prime is 12877752401. The next prime is 12877752521. The reversal of 12877752409 is 90425777821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9914583184 + 2963169225 = 99572^2 + 54435^2 .

It is a cyclic number.

It is not a de Polignac number, because 12877752409 - 2³ = 12877752401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12877752401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6438876204 + 6438876205.

It is an arithmetic number, because the mean of its divisors is an integer number (6438876205).

Almost surely, 2^12877752409 is an apocalyptic number.

It is an amenable number.

12877752409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12877752409 is an equidigital number, since it uses as much as digits as its factorization.

12877752409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 12877752409 in words is "twelve billion, eight hundred seventy-seven million, seven hundred fifty-two thousand, four hundred nine".