20525321243163 has 16 divisors (see below), whose sum is σ = 29856395866752. Its totient is φ = 12439012320000.

The previous prime is 20525321243111. The next prime is 20525321243179. The reversal of 20525321243163 is 36134212352502.

It is not a de Polignac number, because 20525321243163 - 2¹⁴ = 20525321226779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20525321243863) 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, 13684173 + ... + 15109838.

It is an arithmetic number, because the mean of its divisors is an integer number (1866024741672).

Almost surely, 2^{20525321243163} is an apocalyptic number.

20525321243163 is a deficient number, since it is larger than the sum of its proper divisors (9331074623589).

20525321243163 is a wasteful number, since it uses less digits than its factorization.

20525321243163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28815626.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 20525321243163 its reverse (36134212352502), we get a palindrome (56659533595665).

The spelling of 20525321243163 in words is "twenty trillion, five hundred twenty-five billion, three hundred twenty-one million, two hundred forty-three thousand, one hundred sixty-three".