13520166201 has 12 divisors (see below), whose sum is σ = 19530169828. Its totient is φ = 9012963744.

The previous prime is 13520166197. The next prime is 13520166203. The reversal of 13520166201 is 10266102531.

13520166201 is a `hidden beast` number, since 1 + 3 + 5 + 20 + 16 + 620 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5730338601 + 7789827600 = 75699^2 + 88260^2 .

It is not a de Polignac number, because 13520166201 - 2² = 13520166197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520166203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245091 + ... + 295143.

Almost surely, 2^13520166201 is an apocalyptic number.

It is an amenable number.

13520166201 is a deficient number, since it is larger than the sum of its proper divisors (6010003627).

13520166201 is a wasteful number, since it uses less digits than its factorization.

13520166201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80072 (or 80069 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 13520166201 its reverse (10266102531), we get a palindrome (23786268732).

The spelling of 13520166201 in words is "thirteen billion, five hundred twenty million, one hundred sixty-six thousand, two hundred one".