820493311226 has 8 divisors (see below), whose sum is σ = 1264003209300. Its totient is φ = 399158908128.

The previous prime is 820493311213. The next prime is 820493311249. The reversal of 820493311226 is 622113394028.

It can be written as a sum of positive squares in 2 ways, for example, as 808227970225 + 12265341001 = 899015^2 + 110749^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5543873651 + ... + 5543873798.

Almost surely, 2^820493311226 is an apocalyptic number.

820493311226 is a deficient number, since it is larger than the sum of its proper divisors (443509898074).

820493311226 is a wasteful number, since it uses less digits than its factorization.

820493311226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087747488.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 820493311226 in words is "eight hundred twenty billion, four hundred ninety-three million, three hundred eleven thousand, two hundred twenty-six".