4671966781 has 2 divisors, whose sum is σ = 4671966782. Its totient is φ = 4671966780.

The previous prime is 4671966757. The next prime is 4671966823. The reversal of 4671966781 is 1876691764.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3744216100 + 927750681 = 61190^2 + 30459^2 .

It is a cyclic number.

It is not a de Polignac number, because 4671966781 - 2¹¹ = 4671964733 is a prime.

It is a super-2 number, since 2×4671966781² = 43654547205535003922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4671966281) 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, 2335983390 + 2335983391.

It is an arithmetic number, because the mean of its divisors is an integer number (2335983391).

Almost surely, 2^4671966781 is an apocalyptic number.

It is an amenable number.

4671966781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4671966781 is an equidigital number, since it uses as much as digits as its factorization.

4671966781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 4671966781 is about 68351.7869627415. The cubic root of 4671966781 is about 1671.7317164007.

The spelling of 4671966781 in words is "four billion, six hundred seventy-one million, nine hundred sixty-six thousand, seven hundred eighty-one".