320856826826 has 4 divisors (see below), whose sum is σ = 481285240242. Its totient is φ = 160428413412.

The previous prime is 320856826799. The next prime is 320856826897. The reversal of 320856826826 is 628628658023.

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

It can be written as a sum of positive squares in only one way, i.e., 307986151225 + 12870675601 = 554965^2 + 113449^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 80214206705 + ... + 80214206708.

Almost surely, 2^320856826826 is an apocalyptic number.

320856826826 is a deficient number, since it is larger than the sum of its proper divisors (160428413416).

320856826826 is a wasteful number, since it uses less digits than its factorization.

320856826826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160428413415.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 320856826826 in words is "three hundred twenty billion, eight hundred fifty-six million, eight hundred twenty-six thousand, eight hundred twenty-six".