26241323561 has 2 divisors, whose sum is σ = 26241323562. Its totient is φ = 26241323560.

The previous prime is 26241323527. The next prime is 26241323609. The reversal of 26241323561 is 16532314262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15047683561 + 11193640000 = 122669^2 + 105800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26241323561 is a prime.

It is not a weakly prime, because it can be changed into another prime (26241323501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13120661780 + 13120661781.

It is an arithmetic number, because the mean of its divisors is an integer number (13120661781).

Almost surely, 2^26241323561 is an apocalyptic number.

It is an amenable number.

26241323561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26241323561 is an equidigital number, since it uses as much as digits as its factorization.

26241323561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The spelling of 26241323561 in words is "twenty-six billion, two hundred forty-one million, three hundred twenty-three thousand, five hundred sixty-one".