20453131003504 has 20 divisors (see below), whose sum is σ = 40594476474720. Its totient is φ = 9977137074560.

The previous prime is 20453131003483. The next prime is 20453131003507. The reversal of 20453131003504 is 40530013135402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453131003507) 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, 15589276024 + ... + 15589277335.

It is an arithmetic number, because the mean of its divisors is an integer number (2029723823736).

Almost surely, 2^{20453131003504} is an apocalyptic number.

It is an amenable number.

20453131003504 is a deficient number, since it is larger than the sum of its proper divisors (20141345471216).

20453131003504 is a wasteful number, since it uses less digits than its factorization.

20453131003504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31178553408 (or 31178553402 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 20453131003504 its reverse (40530013135402), we get a palindrome (60983144138906).

The spelling of 20453131003504 in words is "twenty trillion, four hundred fifty-three billion, one hundred thirty-one million, three thousand, five hundred four".