26427672461 has 2 divisors, whose sum is σ = 26427672462. Its totient is φ = 26427672460.

The previous prime is 26427672449. The next prime is 26427672463. The reversal of 26427672461 is 16427672462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26209667236 + 218005225 = 161894^2 + 14765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26427672461 is a prime.

It is a Sophie Germain prime.

Together with 26427672463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26427672463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13213836230 + 13213836231.

It is an arithmetic number, because the mean of its divisors is an integer number (13213836231).

Almost surely, 2^26427672461 is an apocalyptic number.

It is an amenable number.

26427672461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26427672461 is an equidigital number, since it uses as much as digits as its factorization.

26427672461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 47.

Subtracting from 26427672461 its reverse (16427672462), we obtain a palindrome (9999999999).

The spelling of 26427672461 in words is "twenty-six billion, four hundred twenty-seven million, six hundred seventy-two thousand, four hundred sixty-one".