20403103434 has 96 divisors (see below), whose sum is σ = 48282739200. Its totient is φ = 5729965920.

The previous prime is 20403103433. The next prime is 20403103447. The reversal of 20403103434 is 43430130402.

It is not an unprimeable number, because it can be changed into a prime (20403103433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7909957 + ... + 7912535.

It is an arithmetic number, because the mean of its divisors is an integer number (502945200).

Almost surely, 2^20403103434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20403103434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24141369600).

20403103434 is an abundant number, since it is smaller than the sum of its proper divisors (27879635766).

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

20403103434 is a wasteful number, since it uses less digits than its factorization.

20403103434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3041 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20403103434 its reverse (43430130402), we get a palindrome (63833233836).

The spelling of 20403103434 in words is "twenty billion, four hundred three million, one hundred three thousand, four hundred thirty-four".