26123161613 has 2 divisors, whose sum is σ = 26123161614. Its totient is φ = 26123161612.

The previous prime is 26123161577. The next prime is 26123161637. The reversal of 26123161613 is 31616132162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24504145444 + 1619016169 = 156538^2 + 40237^2 .

It is a cyclic number.

It is not a de Polignac number, because 26123161613 - 2²⁶ = 26056052749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26123161613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26123161663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13061580806 + 13061580807.

It is an arithmetic number, because the mean of its divisors is an integer number (13061580807).

Almost surely, 2^26123161613 is an apocalyptic number.

It is an amenable number.

26123161613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26123161613 is an equidigital number, since it uses as much as digits as its factorization.

26123161613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

Adding to 26123161613 its reverse (31616132162), we get a palindrome (57739293775).

The spelling of 26123161613 in words is "twenty-six billion, one hundred twenty-three million, one hundred sixty-one thousand, six hundred thirteen".