20413330403 has 4 divisors (see below), whose sum is σ = 20416675848. Its totient is φ = 20409984960.

The previous prime is 20413330349. The next prime is 20413330417. The reversal of 20413330403 is 30403331402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20413330403 - 2³⁰ = 19339588579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413330433) 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, 1663553 + ... + 1675778.

It is an arithmetic number, because the mean of its divisors is an integer number (5104168962).

Almost surely, 2^20413330403 is an apocalyptic number.

20413330403 is a deficient number, since it is larger than the sum of its proper divisors (3345445).

20413330403 is an equidigital number, since it uses as much as digits as its factorization.

20413330403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345444.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20413330403 its reverse (30403331402), we get a palindrome (50816661805).

Subtracting 20413330403 from its reverse (30403331402), we obtain a palindrome (9990000999).

The spelling of 20413330403 in words is "twenty billion, four hundred thirteen million, three hundred thirty thousand, four hundred three".