7127643165 has 16 divisors (see below), whose sum is σ = 11428978176. Its totient is φ = 3793160000.

The previous prime is 7127643161. The next prime is 7127643169. The reversal of 7127643165 is 5613467217.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7127643161) and next prime (7127643169).

It is not a de Polignac number, because 7127643165 - 2² = 7127643161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7127643161) 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 in 15 ways as a sum of consecutive naturals, for example, 508461 + ... + 522290.

It is an arithmetic number, because the mean of its divisors is an integer number (714311136).

Almost surely, 2^7127643165 is an apocalyptic number.

It is an amenable number.

7127643165 is a deficient number, since it is larger than the sum of its proper divisors (4301335011).

7127643165 is a wasteful number, since it uses less digits than its factorization.

7127643165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031220.

The product of its digits is 211680, while the sum is 42.

The square root of 7127643165 is about 84425.3703871058. The cubic root of 7127643165 is about 1924.4884829691.

The spelling of 7127643165 in words is "seven billion, one hundred twenty-seven million, six hundred forty-three thousand, one hundred sixty-five".