47666986369 has 2 divisors, whose sum is σ = 47666986370. Its totient is φ = 47666986368.

The previous prime is 47666986321. The next prime is 47666986397. The reversal of 47666986369 is 96368966674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44848650625 + 2818335744 = 211775^2 + 53088^2 .

It is a cyclic number.

It is not a de Polignac number, because 47666986369 - 2²³ = 47658597761 is a prime.

It is a super-2 number, since 2×47666986369² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47666986298 and 47666986307.

It is not a weakly prime, because it can be changed into another prime (47666986399) 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 as a sum of consecutive naturals, namely, 23833493184 + 23833493185.

It is an arithmetic number, because the mean of its divisors is an integer number (23833493185).

Almost surely, 2^47666986369 is an apocalyptic number.

It is an amenable number.

47666986369 is a deficient number, since it is larger than the sum of its proper divisors (1).

47666986369 is an equidigital number, since it uses as much as digits as its factorization.

47666986369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423263232, while the sum is 70.

The spelling of 47666986369 in words is "forty-seven billion, six hundred sixty-six million, nine hundred eighty-six thousand, three hundred sixty-nine".