26311643 has 2 divisors, whose sum is σ = 26311644. Its totient is φ = 26311642.

The previous prime is 26311633. The next prime is 26311651. The reversal of 26311643 is 34611362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26311643 - 2⁸ = 26311387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26311603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13155821 + 13155822.

It is an arithmetic number, because the mean of its divisors is an integer number (13155822).

Almost surely, 2^26311643 is an apocalyptic number.

26311643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26311643 is an equidigital number, since it uses as much as digits as its factorization.

26311643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 26311643 is about 5129.4875962419. The cubic root of 26311643 is about 297.4285514460.

The spelling of 26311643 in words is "twenty-six million, three hundred eleven thousand, six hundred forty-three".