26542643 has 2 divisors, whose sum is σ = 26542644. Its totient is φ = 26542642.

The previous prime is 26542631. The next prime is 26542651. The reversal of 26542643 is 34624562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26542643 - 2⁸ = 26542387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26542613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271321 + 13271322.

It is an arithmetic number, because the mean of its divisors is an integer number (13271322).

Almost surely, 2^26542643 is an apocalyptic number.

26542643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26542643 is an equidigital number, since it uses as much as digits as its factorization.

26542643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 32.

The square root of 26542643 is about 5151.9552598989. The cubic root of 26542643 is about 298.2964296567.

The spelling of 26542643 in words is "twenty-six million, five hundred forty-two thousand, six hundred forty-three".