6535144165 has 16 divisors (see below), whose sum is σ = 9058340160. Its totient is φ = 4473253120.

The previous prime is 6535144141. The next prime is 6535144211. The reversal of 6535144165 is 5614415356.

It is a happy number.

It is not a de Polignac number, because 6535144165 - 2¹⁵ = 6535111397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3493795 + ... + 3495664.

It is an arithmetic number, because the mean of its divisors is an integer number (566146260).

Almost surely, 2^6535144165 is an apocalyptic number.

It is an amenable number.

6535144165 is a deficient number, since it is larger than the sum of its proper divisors (2523195995).

6535144165 is a wasteful number, since it uses less digits than its factorization.

6535144165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989492.

The product of its digits is 216000, while the sum is 40.

The square root of 6535144165 is about 80840.2385263675. The cubic root of 6535144165 is about 1869.6130215283.

The spelling of 6535144165 in words is "six billion, five hundred thirty-five million, one hundred forty-four thousand, one hundred sixty-five".