20545352334213 has 16 divisors (see below), whose sum is σ = 32070793888896. Its totient is φ = 11453854959360.

The previous prime is 20545352334187. The next prime is 20545352334257. The reversal of 20545352334213 is 31243325354502.

It is not a de Polignac number, because 20545352334213 - 2¹⁰ = 20545352333189 is a prime.

It is a super-2 number, since 2×20545352334213² (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 (20545352334413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11931098056 + ... + 11931099777.

It is an arithmetic number, because the mean of its divisors is an integer number (2004424618056).

Almost surely, 2^{20545352334213} is an apocalyptic number.

It is an amenable number.

20545352334213 is a deficient number, since it is larger than the sum of its proper divisors (11525441554683).

20545352334213 is a wasteful number, since it uses less digits than its factorization.

20545352334213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23862197884.

The product of its (nonzero) digits is 1296000, while the sum is 42.

Adding to 20545352334213 its reverse (31243325354502), we get a palindrome (51788677688715).

The spelling of 20545352334213 in words is "twenty trillion, five hundred forty-five billion, three hundred fifty-two million, three hundred thirty-four thousand, two hundred thirteen".