26223828789866 has 4 divisors (see below), whose sum is σ = 39335743184802. Its totient is φ = 13111914394932.

The previous prime is 26223828789863. The next prime is 26223828789877. The reversal of 26223828789866 is 66898782832262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25706126954641 + 517701835225 = 5070121^2 + 719515^2 .

It is not an unprimeable number, because it can be changed into a prime (26223828789863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555957197465 + ... + 6555957197468.

Almost surely, 2^{26223828789866} is an apocalyptic number.

26223828789866 is a deficient number, since it is larger than the sum of its proper divisors (13111914394936).

26223828789866 is a wasteful number, since it uses less digits than its factorization.

26223828789866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111914394935.

The product of its digits is 2675441664, while the sum is 77.

The spelling of 26223828789866 in words is "twenty-six trillion, two hundred twenty-three billion, eight hundred twenty-eight million, seven hundred eighty-nine thousand, eight hundred sixty-six".