26490738241 has 6 divisors (see below), whose sum is σ = 29117919026. Its totient is φ = 24082489200.

The previous prime is 26490738203. The next prime is 26490738259. The reversal of 26490738241 is 14283709462.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21742977025 + 4747761216 = 147455^2 + 68904^2 .

It is not a de Polignac number, because 26490738241 - 2²⁷ = 26356520513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26490738191 and 26490738200.

It is not an unprimeable number, because it can be changed into a prime (26490738941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109465740 + ... + 109465981.

Almost surely, 2^26490738241 is an apocalyptic number.

It is an amenable number.

26490738241 is a deficient number, since it is larger than the sum of its proper divisors (2627180785).

26490738241 is a wasteful number, since it uses less digits than its factorization.

26490738241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218931743 (or 218931732 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 26490738241 in words is "twenty-six billion, four hundred ninety million, seven hundred thirty-eight thousand, two hundred forty-one".