26775612641 has 2 divisors, whose sum is σ = 26775612642. Its totient is φ = 26775612640.

The previous prime is 26775612631. The next prime is 26775612683. The reversal of 26775612641 is 14621657762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25943867041 + 831745600 = 161071^2 + 28840^2 .

It is a cyclic number.

It is not a de Polignac number, because 26775612641 - 2²² = 26771418337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26775612631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13387806320 + 13387806321.

It is an arithmetic number, because the mean of its divisors is an integer number (13387806321).

Almost surely, 2^26775612641 is an apocalyptic number.

It is an amenable number.

26775612641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26775612641 is an equidigital number, since it uses as much as digits as its factorization.

26775612641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 47.

The spelling of 26775612641 in words is "twenty-six billion, seven hundred seventy-five million, six hundred twelve thousand, six hundred forty-one".