52196667181 has 4 divisors (see below), whose sum is σ = 53181510012. Its totient is φ = 51211824352.

The previous prime is 52196667169. The next prime is 52196667191. The reversal of 52196667181 is 18176669125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13862943081 + 38333724100 = 117741^2 + 195790^2 .

It is a cyclic number.

It is not a de Polignac number, because 52196667181 - 2²³ = 52188278573 is a prime.

It is a super-2 number, since 2×52196667181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52196667191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492421336 + ... + 492421441.

It is an arithmetic number, because the mean of its divisors is an integer number (13295377503).

Almost surely, 2^52196667181 is an apocalyptic number.

It is an amenable number.

52196667181 is a deficient number, since it is larger than the sum of its proper divisors (984842831).

52196667181 is an equidigital number, since it uses as much as digits as its factorization.

52196667181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984842830.

The product of its digits is 1088640, while the sum is 52.

The spelling of 52196667181 in words is "fifty-two billion, one hundred ninety-six million, six hundred sixty-seven thousand, one hundred eighty-one".