26243121077249 has 2 divisors, whose sum is σ = 26243121077250. Its totient is φ = 26243121077248.

The previous prime is 26243121077209. The next prime is 26243121077291. The reversal of 26243121077249 is 94277012134262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16259701358224 + 9983419719025 = 4032332^2 + 3159655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26243121077249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26243121077197 and 26243121077206.

It is not a weakly prime, because it can be changed into another prime (26243121077209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13121560538624 + 13121560538625.

It is an arithmetic number, because the mean of its divisors is an integer number (13121560538625).

Almost surely, 2^{26243121077249} is an apocalyptic number.

It is an amenable number.

26243121077249 is a deficient number, since it is larger than the sum of its proper divisors (1).

26243121077249 is an equidigital number, since it uses as much as digits as its factorization.

26243121077249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 26243121077249 in words is "twenty-six trillion, two hundred forty-three billion, one hundred twenty-one million, seventy-seven thousand, two hundred forty-nine".