26129280461 has 2 divisors, whose sum is σ = 26129280462. Its totient is φ = 26129280460.

The previous prime is 26129280451. The next prime is 26129280493. The reversal of 26129280461 is 16408292162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15186865225 + 10942415236 = 123235^2 + 104606^2 .

It is a cyclic number.

It is not a de Polignac number, because 26129280461 - 2³⁴ = 8949411277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26129280451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13064640230 + 13064640231.

It is an arithmetic number, because the mean of its divisors is an integer number (13064640231).

Almost surely, 2^26129280461 is an apocalyptic number.

It is an amenable number.

26129280461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26129280461 is an equidigital number, since it uses as much as digits as its factorization.

26129280461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 26129280461 in words is "twenty-six billion, one hundred twenty-nine million, two hundred eighty thousand, four hundred sixty-one".