20040513224156 has 36 divisors (see below), whose sum is σ = 37664271734544. Its totient is φ = 9298001005440.

The previous prime is 20040513224141. The next prime is 20040513224159. The reversal of 20040513224156 is 65142231504002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040513224159) 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, 28888856 + ... + 29574431.

It is an arithmetic number, because the mean of its divisors is an integer number (1046229770404).

Almost surely, 2^{20040513224156} is an apocalyptic number.

It is an amenable number.

20040513224156 is a deficient number, since it is larger than the sum of its proper divisors (17623758510388).

20040513224156 is a wasteful number, since it uses less digits than its factorization.

20040513224156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58463450 (or 58463377 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 20040513224156 its reverse (65142231504002), we get a palindrome (85182744728158).

The spelling of 20040513224156 in words is "twenty trillion, forty billion, five hundred thirteen million, two hundred twenty-four thousand, one hundred fifty-six".