20589343230816 has 96 divisors (see below), whose sum is σ = 61675284998880. Its totient is φ = 6677624821248.

The previous prime is 20589343230803. The next prime is 20589343230817. The reversal of 20589343230816 is 61803234398502.

20589343230816 is a `hidden beast` number, since 2 + 0 + 58 + 9 + 343 + 230 + 8 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20589343230817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321998551 + ... + 322062486.

It is an arithmetic number, because the mean of its divisors is an integer number (642450885405).

Almost surely, 2^{20589343230816} is an apocalyptic number.

It is an amenable number.

20589343230816 is an abundant number, since it is smaller than the sum of its proper divisors (41085941768064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20589343230816 is a wasteful number, since it uses less digits than its factorization.

20589343230816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644061093 (or 644061079 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 20589343230816 in words is "twenty trillion, five hundred eighty-nine billion, three hundred forty-three million, two hundred thirty thousand, eight hundred sixteen".