20303144434 has 16 divisors (see below), whose sum is σ = 30941634528. Its totient is φ = 9990218752.

The previous prime is 20303144419. The next prime is 20303144437. The reversal of 20303144434 is 43444130302.

It is not an unprimeable number, because it can be changed into a prime (20303144437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195292 + ... + 280615.

It is an arithmetic number, because the mean of its divisors is an integer number (1933852158).

Almost surely, 2^20303144434 is an apocalyptic number.

20303144434 is a deficient number, since it is larger than the sum of its proper divisors (10638490094).

20303144434 is a wasteful number, since it uses less digits than its factorization.

20303144434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476249.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20303144434 its reverse (43444130302), we get a palindrome (63747274736).

The spelling of 20303144434 in words is "twenty billion, three hundred three million, one hundred forty-four thousand, four hundred thirty-four".