4921668511 has 2 divisors, whose sum is σ = 4921668512. Its totient is φ = 4921668510.

The previous prime is 4921668509. The next prime is 4921668527. The reversal of 4921668511 is 1158661294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4921668511 - 2¹ = 4921668509 is a prime.

Together with 4921668509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4921668581) 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, 2460834255 + 2460834256.

It is an arithmetic number, because the mean of its divisors is an integer number (2460834256).

Almost surely, 2^4921668511 is an apocalyptic number.

4921668511 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921668511 is an equidigital number, since it uses as much as digits as its factorization.

4921668511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 4921668511 is about 70154.6043464005. The cubic root of 4921668511 is about 1700.9992408008. Note that the first 3 decimals are identical.

The spelling of 4921668511 in words is "four billion, nine hundred twenty-one million, six hundred sixty-eight thousand, five hundred eleven".