20513234176 has 36 divisors (see below), whose sum is σ = 43101419200. Its totient is φ = 9716792832.

The previous prime is 20513234141. The next prime is 20513234191. The reversal of 20513234176 is 67143231502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103816 + ... + 2113543.

Almost surely, 2^20513234176 is an apocalyptic number.

It is an amenable number.

20513234176 is an abundant number, since it is smaller than the sum of its proper divisors (22588185024).

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

20513234176 is an equidigital number, since it uses as much as digits as its factorization.

20513234176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4217394 (or 4217380 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 20513234176 its reverse (67143231502), we get a palindrome (87656465678).

The spelling of 20513234176 in words is "twenty billion, five hundred thirteen million, two hundred thirty-four thousand, one hundred seventy-six".