26656460161 has 2 divisors, whose sum is σ = 26656460162. Its totient is φ = 26656460160.

The previous prime is 26656460147. The next prime is 26656460177. The reversal of 26656460161 is 16106465662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19842948225 + 6813511936 = 140865^2 + 82544^2 .

It is a cyclic number.

It is not a de Polignac number, because 26656460161 - 2¹¹ = 26656458113 is a prime.

It is not a weakly prime, because it can be changed into another prime (26656463161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13328230080 + 13328230081.

It is an arithmetic number, because the mean of its divisors is an integer number (13328230081).

Almost surely, 2^26656460161 is an apocalyptic number.

It is an amenable number.

26656460161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26656460161 is an equidigital number, since it uses as much as digits as its factorization.

26656460161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 26656460161 in words is "twenty-six billion, six hundred fifty-six million, four hundred sixty thousand, one hundred sixty-one".