26663435061541 has 2 divisors, whose sum is σ = 26663435061542. Its totient is φ = 26663435061540.

The previous prime is 26663435061539. The next prime is 26663435061551. The reversal of 26663435061541 is 14516053436662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23313543128100 + 3349891933441 = 4828410^2 + 1830271^2 .

It is a cyclic number.

It is not a de Polignac number, because 26663435061541 - 2¹ = 26663435061539 is a prime.

Together with 26663435061539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26663435061511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13331717530770 + 13331717530771.

It is an arithmetic number, because the mean of its divisors is an integer number (13331717530771).

Almost surely, 2^{26663435061541} is an apocalyptic number.

It is an amenable number.

26663435061541 is a deficient number, since it is larger than the sum of its proper divisors (1).

26663435061541 is an equidigital number, since it uses as much as digits as its factorization.

26663435061541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 26663435061541 in words is "twenty-six trillion, six hundred sixty-three billion, four hundred thirty-five million, sixty-one thousand, five hundred forty-one".