20016135724 has 12 divisors (see below), whose sum is σ = 37722717424. Its totient is φ = 9238216464.

The previous prime is 20016135721. The next prime is 20016135731. The reversal of 20016135724 is 42753161002.

It is not an unprimeable number, because it can be changed into a prime (20016135721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192462792 + ... + 192462895.

Almost surely, 2^20016135724 is an apocalyptic number.

It is an amenable number.

20016135724 is a deficient number, since it is larger than the sum of its proper divisors (17706581700).

20016135724 is a wasteful number, since it uses less digits than its factorization.

20016135724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384925704 (or 384925702 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 20016135724 its reverse (42753161002), we get a palindrome (62769296726).

The spelling of 20016135724 in words is "twenty billion, sixteen million, one hundred thirty-five thousand, seven hundred twenty-four".