12651360165 has 32 divisors (see below), whose sum is σ = 22501324800. Its totient is φ = 6744386880.

The previous prime is 12651360109. The next prime is 12651360187. The reversal of 12651360165 is 56106315621.

12651360165 is a `hidden beast` number, since 1 + 26 + 513 + 60 + 1 + 65 = 666.

It is not a de Polignac number, because 12651360165 - 2¹⁰ = 12651359141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301756 + ... + 341114.

It is an arithmetic number, because the mean of its divisors is an integer number (703166400).

Almost surely, 2^12651360165 is an apocalyptic number.

12651360165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12651360165 is a deficient number, since it is larger than the sum of its proper divisors (9849964635).

12651360165 is a wasteful number, since it uses less digits than its factorization.

12651360165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41754 (or 41748 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 12651360165 its reverse (56106315621), we get a palindrome (68757675786).

It can be divided in two parts, 12651 and 360165, that added together give a triangular number (372816 = T₈₆₃).

The spelling of 12651360165 in words is "twelve billion, six hundred fifty-one million, three hundred sixty thousand, one hundred sixty-five".