26041615693 has 2 divisors, whose sum is σ = 26041615694. Its totient is φ = 26041615692.

The previous prime is 26041615609. The next prime is 26041615697. The reversal of 26041615693 is 39651614062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18240663364 + 7800952329 = 135058^2 + 88323^2 .

It is a cyclic number.

It is not a de Polignac number, because 26041615693 - 2⁹ = 26041615181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26041615697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13020807846 + 13020807847.

It is an arithmetic number, because the mean of its divisors is an integer number (13020807847).

Almost surely, 2^26041615693 is an apocalyptic number.

It is an amenable number.

26041615693 is a deficient number, since it is larger than the sum of its proper divisors (1).

26041615693 is an equidigital number, since it uses as much as digits as its factorization.

26041615693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 26041615693 in words is "twenty-six billion, forty-one million, six hundred fifteen thousand, six hundred ninety-three".