6256631878177 has 2 divisors, whose sum is σ = 6256631878178. Its totient is φ = 6256631878176.

The previous prime is 6256631878163. The next prime is 6256631878183. The reversal of 6256631878177 is 7718781366526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5725534910481 + 531096967696 = 2392809^2 + 728764^2 .

It is a cyclic number.

It is not a de Polignac number, because 6256631878177 - 2¹¹ = 6256631876129 is a prime.

It is not a weakly prime, because it can be changed into another prime (6256631878477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128315939088 + 3128315939089.

It is an arithmetic number, because the mean of its divisors is an integer number (3128315939089).

Almost surely, 2^{6256631878177} is an apocalyptic number.

It is an amenable number.

6256631878177 is a deficient number, since it is larger than the sum of its proper divisors (1).

6256631878177 is an equidigital number, since it uses as much as digits as its factorization.

6256631878177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142248960, while the sum is 67.

The spelling of 6256631878177 in words is "six trillion, two hundred fifty-six billion, six hundred thirty-one million, eight hundred seventy-eight thousand, one hundred seventy-seven".