8257361547791 has 2 divisors, whose sum is σ = 8257361547792. Its totient is φ = 8257361547790.

The previous prime is 8257361547731. The next prime is 8257361547881. The reversal of 8257361547791 is 1977451637528.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8257361547791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8257361547731) 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, 4128680773895 + 4128680773896.

It is an arithmetic number, because the mean of its divisors is an integer number (4128680773896).

Almost surely, 2^{8257361547791} is an apocalyptic number.

8257361547791 is a deficient number, since it is larger than the sum of its proper divisors (1).

8257361547791 is an equidigital number, since it uses as much as digits as its factorization.

8257361547791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88905600, while the sum is 65.

The spelling of 8257361547791 in words is "eight trillion, two hundred fifty-seven billion, three hundred sixty-one million, five hundred forty-seven thousand, seven hundred ninety-one".