26161245251 has 2 divisors, whose sum is σ = 26161245252. Its totient is φ = 26161245250.

The previous prime is 26161245167. The next prime is 26161245259. The reversal of 26161245251 is 15254216162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26161245251 is a prime.

It is not a weakly prime, because it can be changed into another prime (26161245259) 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, 13080622625 + 13080622626.

It is an arithmetic number, because the mean of its divisors is an integer number (13080622626).

Almost surely, 2^26161245251 is an apocalyptic number.

26161245251 is a deficient number, since it is larger than the sum of its proper divisors (1).

26161245251 is an equidigital number, since it uses as much as digits as its factorization.

26161245251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The spelling of 26161245251 in words is "twenty-six billion, one hundred sixty-one million, two hundred forty-five thousand, two hundred fifty-one".