20559390472 has 16 divisors (see below), whose sum is σ = 38843125200. Its totient is φ = 10201223760.

The previous prime is 20559390461. The next prime is 20559390473. The reversal of 20559390472 is 27409395502.

It is not an unprimeable number, because it can be changed into a prime (20559390473) 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, 9807822 + ... + 9809917.

It is an arithmetic number, because the mean of its divisors is an integer number (2427695325).

Almost surely, 2^20559390472 is an apocalyptic number.

It is an amenable number.

20559390472 is a deficient number, since it is larger than the sum of its proper divisors (18283734728).

20559390472 is a wasteful number, since it uses less digits than its factorization.

20559390472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19617876 (or 19617872 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

It can be divided in two parts, 205593 and 90472, that added together give a triangular number (296065 = T₇₆₉).

The spelling of 20559390472 in words is "twenty billion, five hundred fifty-nine million, three hundred ninety thousand, four hundred seventy-two".