20020627181 has 2 divisors, whose sum is σ = 20020627182. Its totient is φ = 20020627180.

The previous prime is 20020627157. The next prime is 20020627189. The reversal of 20020627181 is 18172602002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17467851556 + 2552775625 = 132166^2 + 50525^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020627181 - 2³⁰ = 18946885357 is a prime.

It is a super-2 number, since 2×20020627181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020627189) 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 as a sum of consecutive naturals, namely, 10010313590 + 10010313591.

It is an arithmetic number, because the mean of its divisors is an integer number (10010313591).

Almost surely, 2^20020627181 is an apocalyptic number.

It is an amenable number.

20020627181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020627181 is an equidigital number, since it uses as much as digits as its factorization.

20020627181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The spelling of 20020627181 in words is "twenty billion, twenty million, six hundred twenty-seven thousand, one hundred eighty-one".