49533568181 has 4 divisors (see below), whose sum is σ = 49538623692. Its totient is φ = 49528512672.

The previous prime is 49533568153. The next prime is 49533568241. The reversal of 49533568181 is 18186533594.

It is a happy number.

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 40929336100 + 8604232081 = 202310^2 + 92759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49533568181 is a prime.

It is a super-2 number, since 2×49533568181² (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 (49533568141) 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 in 3 ways as a sum of consecutive naturals, for example, 2513030 + ... + 2532663.

It is an arithmetic number, because the mean of its divisors is an integer number (12384655923).

Almost surely, 2^49533568181 is an apocalyptic number.

It is an amenable number.

49533568181 is a deficient number, since it is larger than the sum of its proper divisors (5055511).

49533568181 is an equidigital number, since it uses as much as digits as its factorization.

49533568181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055510.

The product of its digits is 3110400, while the sum is 53.

The spelling of 49533568181 in words is "forty-nine billion, five hundred thirty-three million, five hundred sixty-eight thousand, one hundred eighty-one".