20312513106453 has 16 divisors (see below), whose sum is σ = 30390558667200. Its totient is φ = 13407599408400.

The previous prime is 20312513106371. The next prime is 20312513106467. The reversal of 20312513106453 is 35460131521302.

20312513106453 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 2 + 5 + 1 + 3 + 1 + 0 + 645 + 3 = 666.

It is not a de Polignac number, because 20312513106453 - 2¹⁰ = 20312513105429 is a prime.

It is a super-2 number, since 2×20312513106453² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312513106493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3724330443 + ... + 3724335896.

It is an arithmetic number, because the mean of its divisors is an integer number (1899409916700).

Almost surely, 2^{20312513106453} is an apocalyptic number.

It is an amenable number.

20312513106453 is a deficient number, since it is larger than the sum of its proper divisors (10078045560747).

20312513106453 is a wasteful number, since it uses less digits than its factorization.

20312513106453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448666449 (or 7448666443 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 20312513106453 its reverse (35460131521302), we get a palindrome (55772644627755).

The spelling of 20312513106453 in words is "twenty trillion, three hundred twelve billion, five hundred thirteen million, one hundred six thousand, four hundred fifty-three".