26413749961 has 2 divisors, whose sum is σ = 26413749962. Its totient is φ = 26413749960.

The previous prime is 26413749931. The next prime is 26413750001. The reversal of 26413749961 is 16994731462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19164249225 + 7249500736 = 138435^2 + 85144^2 .

It is a cyclic number.

It is not a de Polignac number, because 26413749961 - 2³¹ = 24266266313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26413749899 and 26413749908.

It is not a weakly prime, because it can be changed into another prime (26413749931) 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, 13206874980 + 13206874981.

It is an arithmetic number, because the mean of its divisors is an integer number (13206874981).

Almost surely, 2^26413749961 is an apocalyptic number.

It is an amenable number.

26413749961 is a deficient number, since it is larger than the sum of its proper divisors (1).

26413749961 is an equidigital number, since it uses as much as digits as its factorization.

26413749961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The spelling of 26413749961 in words is "twenty-six billion, four hundred thirteen million, seven hundred forty-nine thousand, nine hundred sixty-one".