10520205181 has 2 divisors, whose sum is σ = 10520205182. Its totient is φ = 10520205180.

The previous prime is 10520205089. The next prime is 10520205187. The reversal of 10520205181 is 18150202501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8853116281 + 1667088900 = 94091^2 + 40830^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520205181 - 2⁷ = 10520205053 is a prime.

It is a super-2 number, since 2×10520205181² (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 (10520205187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260102590 + 5260102591.

It is an arithmetic number, because the mean of its divisors is an integer number (5260102591).

Almost surely, 2^10520205181 is an apocalyptic number.

It is an amenable number.

10520205181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520205181 is an equidigital number, since it uses as much as digits as its factorization.

10520205181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 10520205181 its reverse (18150202501), we get a palindrome (28670407682).

The spelling of 10520205181 in words is "ten billion, five hundred twenty million, two hundred five thousand, one hundred eighty-one".