220320012439 has 4 divisors (see below), whose sum is σ = 220686602080. Its totient is φ = 219953422800.

The previous prime is 220320012391. The next prime is 220320012469. The reversal of 220320012439 is 934210023022.

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

It is a cyclic number.

It is not a de Polignac number, because 220320012439 - 2¹⁷ = 220319881367 is a prime.

It is a super-2 number, since 2×220320012439² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320012469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183293919 + ... + 183295120.

It is an arithmetic number, because the mean of its divisors is an integer number (55171650520).

Almost surely, 2^220320012439 is an apocalyptic number.

220320012439 is a deficient number, since it is larger than the sum of its proper divisors (366589641).

220320012439 is an equidigital number, since it uses as much as digits as its factorization.

220320012439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366589640.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 220320012439 in words is "two hundred twenty billion, three hundred twenty million, twelve thousand, four hundred thirty-nine".