26168733449 has 2 divisors, whose sum is σ = 26168733450. Its totient is φ = 26168733448.

The previous prime is 26168733439. The next prime is 26168733469. The reversal of 26168733449 is 94433786162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17286990400 + 8881743049 = 131480^2 + 94243^2 .

It is a cyclic number.

It is not a de Polignac number, because 26168733449 - 2⁴ = 26168733433 is a prime.

It is a super-2 number, since 2×26168733449² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26168733449.

It is not a weakly prime, because it can be changed into another prime (26168733439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13084366724 + 13084366725.

It is an arithmetic number, because the mean of its divisors is an integer number (13084366725).

Almost surely, 2^26168733449 is an apocalyptic number.

It is an amenable number.

26168733449 is a deficient number, since it is larger than the sum of its proper divisors (1).

26168733449 is an equidigital number, since it uses as much as digits as its factorization.

26168733449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 53.

The spelling of 26168733449 in words is "twenty-six billion, one hundred sixty-eight million, seven hundred thirty-three thousand, four hundred forty-nine".