22785201638329 has 4 divisors (see below), whose sum is σ = 24537909456676. Its totient is φ = 21032493819984.

The previous prime is 22785201638327. The next prime is 22785201638399. The reversal of 22785201638329 is 92383610258722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15292127565225 + 7493074073104 = 3910515^2 + 2737348^2 .

It is a cyclic number.

It is not a de Polignac number, because 22785201638329 - 2¹ = 22785201638327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22785201638327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876353909154 + ... + 876353909179.

It is an arithmetic number, because the mean of its divisors is an integer number (6134477364169).

Almost surely, 2^{22785201638329} is an apocalyptic number.

It is an amenable number.

22785201638329 is a deficient number, since it is larger than the sum of its proper divisors (1752707818347).

22785201638329 is a wasteful number, since it uses less digits than its factorization.

22785201638329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752707818346.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 22785201638329 in words is "twenty-two trillion, seven hundred eighty-five billion, two hundred one million, six hundred thirty-eight thousand, three hundred twenty-nine".