4971543165 has 12 divisors (see below), whose sum is σ = 8617341564. Its totient is φ = 2651489664.

The previous prime is 4971543151. The next prime is 4971543197. The reversal of 4971543165 is 5613451794.

4971543165 is a `hidden beast` number, since 4 + 97 + 1 + 543 + 16 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1998894681 + 2972648484 = 44709^2 + 54522^2 .

It is not a de Polignac number, because 4971543165 - 2⁵ = 4971543133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 110478737 = 4971543165 / (4 + 9 + 7 + 1 + 5 + 4 + 3 + 1 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 4971543165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55239324 + ... + 55239413.

It is an arithmetic number, because the mean of its divisors is an integer number (718111797).

Almost surely, 2^4971543165 is an apocalyptic number.

4971543165 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4971543165 is a deficient number, since it is larger than the sum of its proper divisors (3645798399).

4971543165 is a wasteful number, since it uses less digits than its factorization.

4971543165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110478748 (or 110478745 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 4971543165 is about 70509.1707865012. The cubic root of 4971543165 is about 1706.7257392569.

The spelling of 4971543165 in words is "four billion, nine hundred seventy-one million, five hundred forty-three thousand, one hundred sixty-five".