23154145065 has 12 divisors (see below), whose sum is σ = 40133851524. Its totient is φ = 12348877344.

The previous prime is 23154145031. The next prime is 23154145073. The reversal of 23154145065 is 56054145132.

23154145065 is a `hidden beast` number, since 2 + 3 + 1 + 541 + 4 + 50 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9408224016 + 13745921049 = 96996^2 + 117243^2 .

It is not a de Polignac number, because 23154145065 - 2³³ = 14564210473 is a prime.

It is a super-2 number, since 2×23154145065² (a number of 22 digits) contains 22 as substring.

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, 257268234 + ... + 257268323.

It is an arithmetic number, because the mean of its divisors is an integer number (3344487627).

Almost surely, 2^23154145065 is an apocalyptic number.

It is an amenable number.

23154145065 is a deficient number, since it is larger than the sum of its proper divisors (16979706459).

23154145065 is a wasteful number, since it uses less digits than its factorization.

23154145065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514536568 (or 514536565 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 23154145065 in words is "twenty-three billion, one hundred fifty-four million, one hundred forty-five thousand, sixty-five".