20304016464 has 20 divisors (see below), whose sum is σ = 52452042656. Its totient is φ = 6768005472.

The previous prime is 20304016457. The next prime is 20304016477. The reversal of 20304016464 is 46461040302.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 211500124 + ... + 211500219.

Almost surely, 2^20304016464 is an apocalyptic number.

20304016464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20304016464 is an abundant number, since it is smaller than the sum of its proper divisors (32148026192).

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

20304016464 is a wasteful number, since it uses less digits than its factorization.

20304016464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423000354 (or 423000348 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20304016464 its reverse (46461040302), we get a palindrome (66765056766).

The spelling of 20304016464 in words is "twenty billion, three hundred four million, sixteen thousand, four hundred sixty-four".