20140432506 has 48 divisors (see below), whose sum is σ = 43895956104. Its totient is φ = 6673790592.

The previous prime is 20140432489. The next prime is 20140432531. The reversal of 20140432506 is 60523404102.

20140432506 is a `hidden beast` number, since 2 + 0 + 1 + 404 + 3 + 250 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19504636281 + 635796225 = 139659^2 + 25215^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20140432506.

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, 8129740 + ... + 8132216.

Almost surely, 2^20140432506 is an apocalyptic number.

20140432506 is an abundant number, since it is smaller than the sum of its proper divisors (23755523598).

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

20140432506 is a wasteful number, since it uses less digits than its factorization.

20140432506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975 (or 4972 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20140432506 its reverse (60523404102), we get a palindrome (80663836608).

The spelling of 20140432506 in words is "twenty billion, one hundred forty million, four hundred thirty-two thousand, five hundred six".