20704243059 has 10 divisors (see below), whose sum is σ = 30928560740. Its totient is φ = 13802828652.

The previous prime is 20704243009. The next prime is 20704243061. The reversal of 20704243059 is 95034240702.

It is not a de Polignac number, because 20704243059 - 2²¹ = 20702145907 is a prime.

It is a super-2 number, since 2×20704243059² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20704243009) 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 9 ways as a sum of consecutive naturals, for example, 127803889 + ... + 127804050.

It is an arithmetic number, because the mean of its divisors is an integer number (3092856074).

Almost surely, 2^20704243059 is an apocalyptic number.

20704243059 is a deficient number, since it is larger than the sum of its proper divisors (10224317681).

20704243059 is an equidigital number, since it uses as much as digits as its factorization.

20704243059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255607951 (or 255607942 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 20704243059 in words is "twenty billion, seven hundred four million, two hundred forty-three thousand, fifty-nine".