20330487547 has 16 divisors (see below), whose sum is σ = 20620334592. Its totient is φ = 20042951040.

The previous prime is 20330487473. The next prime is 20330487577. The reversal of 20330487547 is 74578403302.

It is a cyclic number.

It is not a de Polignac number, because 20330487547 - 2²³ = 20322098939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330487577) 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, 31422378 + ... + 31423024.

It is an arithmetic number, because the mean of its divisors is an integer number (1288770912).

Almost surely, 2^20330487547 is an apocalyptic number.

20330487547 is a deficient number, since it is larger than the sum of its proper divisors (289847045).

20330487547 is a wasteful number, since it uses less digits than its factorization.

20330487547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 20330487547 in words is "twenty billion, three hundred thirty million, four hundred eighty-seven thousand, five hundred forty-seven".