20016503234 has 24 divisors (see below), whose sum is σ = 37613431548. Its totient is φ = 7918616160.

The previous prime is 20016503189. The next prime is 20016503237. The reversal of 20016503234 is 43230561002.

It can be written as a sum of positive squares in 2 ways, for example, as 19806340225 + 210163009 = 140735^2 + 14497^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20016503237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7854497 + ... + 7857044.

Almost surely, 2^20016503234 is an apocalyptic number.

20016503234 is a deficient number, since it is larger than the sum of its proper divisors (17596928314).

20016503234 is a wasteful number, since it uses less digits than its factorization.

20016503234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711570 (or 15711563 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 20016503234 in words is "twenty billion, sixteen million, five hundred three thousand, two hundred thirty-four".