20512545330213 has 24 divisors (see below), whose sum is σ = 30726848469408. Its totient is φ = 13674924583344.

The previous prime is 20512545330203. The next prime is 20512545330217. The reversal of 20512545330213 is 31203354521502.

20512545330213 is a `hidden beast` number, since 2 + 0 + 51 + 2 + 54 + 533 + 0 + 21 + 3 = 666.

It is not a de Polignac number, because 20512545330213 - 2²⁶ = 20512478221349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512545330217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43039606 + ... + 43513592.

It is an arithmetic number, because the mean of its divisors is an integer number (1280285352892).

Almost surely, 2^{20512545330213} is an apocalyptic number.

It is an amenable number.

20512545330213 is a deficient number, since it is larger than the sum of its proper divisors (10214303139195).

20512545330213 is an equidigital number, since it uses as much as digits as its factorization.

20512545330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652095 (or 652083 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 20512545330213 its reverse (31203354521502), we get a palindrome (51715899851715).

The spelling of 20512545330213 in words is "twenty trillion, five hundred twelve billion, five hundred forty-five million, three hundred thirty thousand, two hundred thirteen".