20434430004 has 48 divisors (see below), whose sum is σ = 51546331200. Its totient is φ = 6278570496.

The previous prime is 20434429979. The next prime is 20434430011. The reversal of 20434430004 is 40003443402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202709 + ... + 1219580.

It is an arithmetic number, because the mean of its divisors is an integer number (1073881900).

Almost surely, 2^20434430004 is an apocalyptic number.

It is an amenable number.

20434430004 is an abundant number, since it is smaller than the sum of its proper divisors (31111901196).

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

20434430004 is a wasteful number, since it uses less digits than its factorization.

20434430004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422352 (or 2422350 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20434430004 its reverse (40003443402), we get a palindrome (60437873406).

The spelling of 20434430004 in words is "twenty billion, four hundred thirty-four million, four hundred thirty thousand, four".