47889361181 has 2 divisors, whose sum is σ = 47889361182. Its totient is φ = 47889361180.

The previous prime is 47889361171. The next prime is 47889361229. The reversal of 47889361181 is 18116398874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47738317081 + 151044100 = 218491^2 + 12290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47889361181 is a prime.

It is a super-2 number, since 2×47889361181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47889361111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23944680590 + 23944680591.

It is an arithmetic number, because the mean of its divisors is an integer number (23944680591).

Almost surely, 2^47889361181 is an apocalyptic number.

It is an amenable number.

47889361181 is a deficient number, since it is larger than the sum of its proper divisors (1).

47889361181 is an equidigital number, since it uses as much as digits as its factorization.

47889361181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 56.

The spelling of 47889361181 in words is "forty-seven billion, eight hundred eighty-nine million, three hundred sixty-one thousand, one hundred eighty-one".