20816330054 has 16 divisors (see below), whose sum is σ = 33629341200. Its totient is φ = 9606690720.

The previous prime is 20816329993. The next prime is 20816330063. The reversal of 20816330054 is 45003361802.

It is a self number, because there is not a number n which added to its sum of digits gives 20816330054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341597 + ... + 397895.

It is an arithmetic number, because the mean of its divisors is an integer number (2101833825).

Almost surely, 2^20816330054 is an apocalyptic number.

20816330054 is a deficient number, since it is larger than the sum of its proper divisors (12813011146).

20816330054 is a wasteful number, since it uses less digits than its factorization.

20816330054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70535.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 20816330054 its reverse (45003361802), we get a palindrome (65819691856).

The spelling of 20816330054 in words is "twenty billion, eight hundred sixteen million, three hundred thirty thousand, fifty-four".