20804734589 has 24 divisors (see below), whose sum is σ = 24066098400. Its totient is φ = 17910547200.

The previous prime is 20804734547. The next prime is 20804734619. The reversal of 20804734589 is 98543740802.

It is not a de Polignac number, because 20804734589 - 2²⁴ = 20787957373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20804734519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93914 + ... + 224564.

It is an arithmetic number, because the mean of its divisors is an integer number (1002754100).

Almost surely, 2^20804734589 is an apocalyptic number.

20804734589 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20804734589 is a deficient number, since it is larger than the sum of its proper divisors (3261363811).

20804734589 is a wasteful number, since it uses less digits than its factorization.

20804734589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130733 (or 130716 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 20804734589 in words is "twenty billion, eight hundred four million, seven hundred thirty-four thousand, five hundred eighty-nine".