20043110451 has 32 divisors (see below), whose sum is σ = 32913054720. Its totient is φ = 10565184384.

The previous prime is 20043110429. The next prime is 20043110459. The reversal of 20043110451 is 15401134002.

It is not a de Polignac number, because 20043110451 - 2⁶ = 20043110387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20043110459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402061 + ... + 449153.

It is an arithmetic number, because the mean of its divisors is an integer number (1028532960).

Almost surely, 2^20043110451 is an apocalyptic number.

20043110451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20043110451 is a deficient number, since it is larger than the sum of its proper divisors (12869944269).

20043110451 is a wasteful number, since it uses less digits than its factorization.

20043110451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48675.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 20043110451 its reverse (15401134002), we get a palindrome (35444244453).

The spelling of 20043110451 in words is "twenty billion, forty-three million, one hundred ten thousand, four hundred fifty-one".