20454032320 has 28 divisors (see below), whose sum is σ = 48706165224. Its totient is φ = 8181612800.

The previous prime is 20454032297. The next prime is 20454032327. The reversal of 20454032320 is 2323045402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454032327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31959106 + ... + 31959745.

Almost surely, 2^20454032320 is an apocalyptic number.

20454032320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20454032320 is an abundant number, since it is smaller than the sum of its proper divisors (28252132904).

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

20454032320 is an equidigital number, since it uses as much as digits as its factorization.

20454032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63918868 (or 63918858 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20454032320 its reverse (2323045402), we get a palindrome (22777077722).

The spelling of 20454032320 in words is "twenty billion, four hundred fifty-four million, thirty-two thousand, three hundred twenty".