47411851681 has 2 divisors, whose sum is σ = 47411851682. Its totient is φ = 47411851680.

The previous prime is 47411851661. The next prime is 47411851691. The reversal of 47411851681 is 18615811474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45386041600 + 2025810081 = 213040^2 + 45009^2 .

It is a cyclic number.

It is not a de Polignac number, because 47411851681 - 2¹⁹ = 47411327393 is a prime.

It is a super-2 number, since 2×47411851681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47411851621) 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, 23705925840 + 23705925841.

It is an arithmetic number, because the mean of its divisors is an integer number (23705925841).

Almost surely, 2^47411851681 is an apocalyptic number.

It is an amenable number.

47411851681 is a deficient number, since it is larger than the sum of its proper divisors (1).

47411851681 is an equidigital number, since it uses as much as digits as its factorization.

47411851681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 46.

The spelling of 47411851681 in words is "forty-seven billion, four hundred eleven million, eight hundred fifty-one thousand, six hundred eighty-one".