20020173401 has 2 divisors, whose sum is σ = 20020173402. Its totient is φ = 20020173400.

The previous prime is 20020173389. The next prime is 20020173409. The reversal of 20020173401 is 10437102002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13328933401 + 6691240000 = 115451^2 + 81800^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020173401 - 2³⁴ = 2840304217 is a prime.

It is a super-2 number, since 2×20020173401² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20020173409) 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, 10010086700 + 10010086701.

It is an arithmetic number, because the mean of its divisors is an integer number (10010086701).

Almost surely, 2^20020173401 is an apocalyptic number.

It is an amenable number.

20020173401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020173401 is an equidigital number, since it uses as much as digits as its factorization.

20020173401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20020173401 its reverse (10437102002), we get a palindrome (30457275403).

The spelling of 20020173401 in words is "twenty billion, twenty million, one hundred seventy-three thousand, four hundred one".