26805011 has 2 divisors, whose sum is σ = 26805012. Its totient is φ = 26805010.

The previous prime is 26804989. The next prime is 26805017. The reversal of 26805011 is 11050862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26805011 is a prime.

It is a super-2 number, since 2×26805011² = 1437017229420242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26805017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13402505 + 13402506.

It is an arithmetic number, because the mean of its divisors is an integer number (13402506).

Almost surely, 2^26805011 is an apocalyptic number.

26805011 is a deficient number, since it is larger than the sum of its proper divisors (1).

26805011 is an equidigital number, since it uses as much as digits as its factorization.

26805011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 26805011 is about 5177.3555991452. The cubic root of 26805011 is about 299.2760730228.

Adding to 26805011 its reverse (11050862), we get a palindrome (37855873).

The spelling of 26805011 in words is "twenty-six million, eight hundred five thousand, eleven".