11723895165 has 16 divisors (see below), whose sum is σ = 18762581376. Its totient is φ = 6251294400.

The previous prime is 11723895143. The next prime is 11723895193. The reversal of 11723895165 is 56159832711.

It is not a de Polignac number, because 11723895165 - 2¹³ = 11723886973 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, 22081 + ... + 154710.

It is an arithmetic number, because the mean of its divisors is an integer number (1172661336).

Almost surely, 2^11723895165 is an apocalyptic number.

11723895165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11723895165 is a deficient number, since it is larger than the sum of its proper divisors (7038686211).

11723895165 is a wasteful number, since it uses less digits than its factorization.

11723895165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181220.

The product of its digits is 453600, while the sum is 48.

The spelling of 11723895165 in words is "eleven billion, seven hundred twenty-three million, eight hundred ninety-five thousand, one hundred sixty-five".