26780113 has 2 divisors, whose sum is σ = 26780114. Its totient is φ = 26780112.

The previous prime is 26780111. The next prime is 26780129. The reversal of 26780113 is 31108762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24324624 + 2455489 = 4932^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 26780113 - 2¹ = 26780111 is a prime.

Together with 26780111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26780111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13390056 + 13390057.

It is an arithmetic number, because the mean of its divisors is an integer number (13390057).

Almost surely, 2^26780113 is an apocalyptic number.

It is an amenable number.

26780113 is a deficient number, since it is larger than the sum of its proper divisors (1).

26780113 is an equidigital number, since it uses as much as digits as its factorization.

26780113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 26780113 is about 5174.9505311645. The cubic root of 26780113 is about 299.1833828420.

Adding to 26780113 its reverse (31108762), we get a palindrome (57888875).

The spelling of 26780113 in words is "twenty-six million, seven hundred eighty thousand, one hundred thirteen".