26645790233 has 2 divisors, whose sum is σ = 26645790234. Its totient is φ = 26645790232.

The previous prime is 26645790221. The next prime is 26645790253. The reversal of 26645790233 is 33209754662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14416084489 + 12229705744 = 120067^2 + 110588^2 .

It is a cyclic number.

It is not a de Polignac number, because 26645790233 - 2⁶ = 26645790169 is a prime.

It is not a weakly prime, because it can be changed into another prime (26645790253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13322895116 + 13322895117.

It is an arithmetic number, because the mean of its divisors is an integer number (13322895117).

Almost surely, 2^26645790233 is an apocalyptic number.

It is an amenable number.

26645790233 is a deficient number, since it is larger than the sum of its proper divisors (1).

26645790233 is an equidigital number, since it uses as much as digits as its factorization.

26645790233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 26645790233 in words is "twenty-six billion, six hundred forty-five million, seven hundred ninety thousand, two hundred thirty-three".