26221861233 has 12 divisors (see below), whose sum is σ = 37890914100. Its totient is φ = 17474367456.

The previous prime is 26221861199. The next prime is 26221861249. The reversal of 26221861233 is 33216812262.

26221861233 is a `hidden beast` number, since 2 + 6 + 2 + 2 + 1 + 8 + 612 + 33 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16881025329 + 9340835904 = 129927^2 + 96648^2 .

It is not a de Polignac number, because 26221861233 - 2²⁶ = 26154752369 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (26221861273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548566 + ... + 594447.

It is an arithmetic number, because the mean of its divisors is an integer number (3157576175).

Almost surely, 2^26221861233 is an apocalyptic number.

It is an amenable number.

26221861233 is a deficient number, since it is larger than the sum of its proper divisors (11669052867).

26221861233 is a wasteful number, since it uses less digits than its factorization.

26221861233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145568 (or 1145565 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 26221861233 in words is "twenty-six billion, two hundred twenty-one million, eight hundred sixty-one thousand, two hundred thirty-three".