12655503577 has 2 divisors, whose sum is σ = 12655503578. Its totient is φ = 12655503576.

The previous prime is 12655503521. The next prime is 12655503607. The reversal of 12655503577 is 77530555621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8147589696 + 4507913881 = 90264^2 + 67141^2 .

It is a cyclic number.

It is not a de Polignac number, because 12655503577 - 2²³ = 12647114969 is a prime.

It is not a weakly prime, because it can be changed into another prime (12655504577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327751788 + 6327751789.

It is an arithmetic number, because the mean of its divisors is an integer number (6327751789).

Almost surely, 2^12655503577 is an apocalyptic number.

It is an amenable number.

12655503577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655503577 is an equidigital number, since it uses as much as digits as its factorization.

12655503577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102500, while the sum is 46.

The spelling of 12655503577 in words is "twelve billion, six hundred fifty-five million, five hundred three thousand, five hundred seventy-seven".