6640473127 has 2 divisors, whose sum is σ = 6640473128. Its totient is φ = 6640473126.

The previous prime is 6640473089. The next prime is 6640473143. The reversal of 6640473127 is 7213740466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6640473127 - 2¹⁹ = 6639948839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6640473127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6640443127) 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, 3320236563 + 3320236564.

It is an arithmetic number, because the mean of its divisors is an integer number (3320236564).

Almost surely, 2^6640473127 is an apocalyptic number.

6640473127 is a deficient number, since it is larger than the sum of its proper divisors (1).

6640473127 is an equidigital number, since it uses as much as digits as its factorization.

6640473127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 6640473127 is about 81489.0982095151. The cubic root of 6640473127 is about 1879.6039160107.

The spelling of 6640473127 in words is "six billion, six hundred forty million, four hundred seventy-three thousand, one hundred twenty-seven".