20569141859 has 4 divisors (see below), whose sum is σ = 23507590704. Its totient is φ = 17630693016.

The previous prime is 20569141849. The next prime is 20569141877. The reversal of 20569141859 is 95814196502.

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 20569141859 - 2⁴ = 20569141843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20569141849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469224412 + ... + 1469224425.

It is an arithmetic number, because the mean of its divisors is an integer number (5876897676).

Almost surely, 2^20569141859 is an apocalyptic number.

20569141859 is a deficient number, since it is larger than the sum of its proper divisors (2938448845).

20569141859 is an equidigital number, since it uses as much as digits as its factorization.

20569141859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938448844.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 20569141859 in words is "twenty billion, five hundred sixty-nine million, one hundred forty-one thousand, eight hundred fifty-nine".