6256631878247 has 2 divisors, whose sum is σ = 6256631878248. Its totient is φ = 6256631878246.

The previous prime is 6256631878199. The next prime is 6256631878271. The reversal of 6256631878247 is 7428781366526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6256631878247 - 2⁶ = 6256631878183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6256631878547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128315939123 + 3128315939124.

It is an arithmetic number, because the mean of its divisors is an integer number (3128315939124).

Almost surely, 2^{6256631878247} is an apocalyptic number.

6256631878247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6256631878247 is an equidigital number, since it uses as much as digits as its factorization.

6256631878247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 65.

The spelling of 6256631878247 in words is "six trillion, two hundred fifty-six billion, six hundred thirty-one million, eight hundred seventy-eight thousand, two hundred forty-seven".