26252661157 has 2 divisors, whose sum is σ = 26252661158. Its totient is φ = 26252661156.

The previous prime is 26252661151. The next prime is 26252661167. The reversal of 26252661157 is 75116625262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26248536196 + 4124961 = 162014^2 + 2031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26252661157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26252661151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13126330578 + 13126330579.

It is an arithmetic number, because the mean of its divisors is an integer number (13126330579).

Almost surely, 2^26252661157 is an apocalyptic number.

It is an amenable number.

26252661157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26252661157 is an equidigital number, since it uses as much as digits as its factorization.

26252661157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The spelling of 26252661157 in words is "twenty-six billion, two hundred fifty-two million, six hundred sixty-one thousand, one hundred fifty-seven".