22779252805 has 8 divisors (see below), whose sum is σ = 27337369752. Its totient is φ = 18221891328.

The previous prime is 22779252787. The next prime is 22779252827. The reversal of 22779252805 is 50825297722.

It can be written as a sum of positive squares in 4 ways, for example, as 11307557569 + 11471695236 = 106337^2 + 107106^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22779252805 - 2⁵ = 22779252773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 120264 + ... + 244993.

It is an arithmetic number, because the mean of its divisors is an integer number (3417171219).

Almost surely, 2^22779252805 is an apocalyptic number.

It is an amenable number.

22779252805 is a deficient number, since it is larger than the sum of its proper divisors (4558116947).

22779252805 is a wasteful number, since it uses less digits than its factorization.

22779252805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377735.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 22779252805 in words is "twenty-two billion, seven hundred seventy-nine million, two hundred fifty-two thousand, eight hundred five".