47171865385553 has 2 divisors, whose sum is σ = 47171865385554. Its totient is φ = 47171865385552.

The previous prime is 47171865385517. The next prime is 47171865385577. The reversal of 47171865385553 is 35558356817174.

47171865385553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36931788585409 + 10240076800144 = 6077153^2 + 3200012^2 .

It is a cyclic number.

It is not a de Polignac number, because 47171865385553 - 2¹⁶ = 47171865320017 is a prime.

It is a super-2 number, since 2×47171865385553² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47171865385153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23585932692776 + 23585932692777.

It is an arithmetic number, because the mean of its divisors is an integer number (23585932692777).

Almost surely, 2^{47171865385553} is an apocalyptic number.

It is an amenable number.

47171865385553 is a deficient number, since it is larger than the sum of its proper divisors (1).

47171865385553 is an equidigital number, since it uses as much as digits as its factorization.

47171865385553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360000, while the sum is 68.

The spelling of 47171865385553 in words is "forty-seven trillion, one hundred seventy-one billion, eight hundred sixty-five million, three hundred eighty-five thousand, five hundred fifty-three".