5205781079226 has 512 divisors, whose sum is σ = 15566487552000. Its totient is φ = 1251379425024.

The previous prime is 5205781079183. The next prime is 5205781079227. The reversal of 5205781079226 is 6229701875025.

5205781079226 is a `hidden beast` number, since 52 + 0 + 578 + 10 + 7 + 9 + 2 + 2 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5205781079227) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 258893865 + ... + 258913971.

It is an arithmetic number, because the mean of its divisors is an integer number (30403296000).

Almost surely, 2^{5205781079226} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5205781079226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783243776000).

5205781079226 is an abundant number, since it is smaller than the sum of its proper divisors (10360706472774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5205781079226 is a wasteful number, since it uses less digits than its factorization.

5205781079226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20263 (or 20257 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 5205781079226 in words is "five trillion, two hundred five billion, seven hundred eighty-one million, seventy-nine thousand, two hundred twenty-six".