26765466456761 has 2 divisors, whose sum is σ = 26765466456762. Its totient is φ = 26765466456760.

The previous prime is 26765466456749. The next prime is 26765466456767. The reversal of 26765466456761 is 16765466456762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26644540567225 + 120925889536 = 5161835^2 + 347744^2 .

It is a cyclic number.

It is not a de Polignac number, because 26765466456761 - 2¹⁸ = 26765466194617 is a prime.

It is a super-2 number, since 2×26765466456761² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26765466456767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13382733228380 + 13382733228381.

It is an arithmetic number, because the mean of its divisors is an integer number (13382733228381).

Almost surely, 2^{26765466456761} is an apocalyptic number.

It is an amenable number.

26765466456761 is a deficient number, since it is larger than the sum of its proper divisors (1).

26765466456761 is an equidigital number, since it uses as much as digits as its factorization.

26765466456761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1828915200, while the sum is 71.

Subtracting from 26765466456761 its reverse (16765466456762), we obtain a palindrome (9999999999999).

The spelling of 26765466456761 in words is "twenty-six trillion, seven hundred sixty-five billion, four hundred sixty-six million, four hundred fifty-six thousand, seven hundred sixty-one".