26512136461 has 2 divisors, whose sum is σ = 26512136462. Its totient is φ = 26512136460.

The previous prime is 26512136447. The next prime is 26512136467. The reversal of 26512136461 is 16463121562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26234280900 + 277855561 = 161970^2 + 16669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26512136461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26512136461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26512136467) 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, 13256068230 + 13256068231.

It is an arithmetic number, because the mean of its divisors is an integer number (13256068231).

Almost surely, 2^26512136461 is an apocalyptic number.

It is an amenable number.

26512136461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26512136461 is an equidigital number, since it uses as much as digits as its factorization.

26512136461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The spelling of 26512136461 in words is "twenty-six billion, five hundred twelve million, one hundred thirty-six thousand, four hundred sixty-one".