20503220234 has 48 divisors (see below), whose sum is σ = 37357070400. Its totient is φ = 8399293056.

The previous prime is 20503220203. The next prime is 20503220279. The reversal of 20503220234 is 43202230502.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5270162 + ... + 5274050.

It is an arithmetic number, because the mean of its divisors is an integer number (778272300).

Almost surely, 2^20503220234 is an apocalyptic number.

20503220234 is a deficient number, since it is larger than the sum of its proper divisors (16853850166).

20503220234 is a wasteful number, since it uses less digits than its factorization.

20503220234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267 (or 6260 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20503220234 its reverse (43202230502), we get a palindrome (63705450736).

The spelling of 20503220234 in words is "twenty billion, five hundred three million, two hundred twenty thousand, two hundred thirty-four".