4064061691 has 2 divisors, whose sum is σ = 4064061692. Its totient is φ = 4064061690.

The previous prime is 4064061689. The next prime is 4064061697. The reversal of 4064061691 is 1961604604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4064061691 - 2¹ = 4064061689 is a prime.

Together with 4064061689, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4064061691.

It is not a weakly prime, because it can be changed into another prime (4064061697) 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, 2032030845 + 2032030846.

It is an arithmetic number, because the mean of its divisors is an integer number (2032030846).

Almost surely, 2^4064061691 is an apocalyptic number.

4064061691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4064061691 is an equidigital number, since it uses as much as digits as its factorization.

4064061691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4064061691 is about 63749.9936549016. The cubic root of 4064061691 is about 1595.8305100498.

The spelling of 4064061691 in words is "four billion, sixty-four million, sixty-one thousand, six hundred ninety-one".