20330240403 has 16 divisors (see below), whose sum is σ = 29842560000. Its totient is φ = 12208315680.

The previous prime is 20330240387. The next prime is 20330240459. The reversal of 20330240403 is 30404203302.

It is not a de Polignac number, because 20330240403 - 2⁴ = 20330240387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20330240403.

It is not an unprimeable number, because it can be changed into a prime (20330248403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2822403 + ... + 2829596.

It is an arithmetic number, because the mean of its divisors is an integer number (1865160000).

Almost surely, 2^20330240403 is an apocalyptic number.

20330240403 is a deficient number, since it is larger than the sum of its proper divisors (9512319597).

20330240403 is a wasteful number, since it uses less digits than its factorization.

20330240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652122.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20330240403 its reverse (30404203302), we get a palindrome (50734443705).

The spelling of 20330240403 in words is "twenty billion, three hundred thirty million, two hundred forty thousand, four hundred three".