826221702338 has 6 divisors (see below), whose sum is σ = 1239334481721. Its totient is φ = 413110208432.

The previous prime is 826221702337. The next prime is 826221702401. The reversal of 826221702338 is 833207122628.

It can be written as a sum of positive squares in 2 ways, for example, as 729191321329 + 97030381009 = 853927^2 + 311497^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=642737.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (826221702337) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 964106 + ... + 1606842.

Almost surely, 2^826221702338 is an apocalyptic number.

826221702338 is a deficient number, since it is larger than the sum of its proper divisors (413112779383).

826221702338 is an frugal number, since it uses more digits than its factorization.

826221702338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285476 (or 642739 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 826221702338 in words is "eight hundred twenty-six billion, two hundred twenty-one million, seven hundred two thousand, three hundred thirty-eight".