6371780065 has 16 divisors (see below), whose sum is σ = 8868868992. Its totient is φ = 4304006784.

The previous prime is 6371780057. The next prime is 6371780099. The reversal of 6371780065 is 5600871736.

It is not a de Polignac number, because 6371780065 - 2³ = 6371780057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1356244 + ... + 1360933.

It is an arithmetic number, because the mean of its divisors is an integer number (554304312).

Almost surely, 2^6371780065 is an apocalyptic number.

It is an amenable number.

6371780065 is a deficient number, since it is larger than the sum of its proper divisors (2497088927).

6371780065 is a wasteful number, since it uses less digits than its factorization.

6371780065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717256.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 6371780065 is about 79823.4305514365. The cubic root of 6371780065 is about 1853.9026515932.

The spelling of 6371780065 in words is "six billion, three hundred seventy-one million, seven hundred eighty thousand, sixty-five".