12671517365 has 8 divisors (see below), whose sum is σ = 16375499448. Its totient is φ = 9357428160.

The previous prime is 12671517293. The next prime is 12671517367. The reversal of 12671517365 is 56371517621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 742072081 + 11929445284 = 27241^2 + 109222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12671517365 - 2¹⁴ = 12671500981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671517367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97473146 + ... + 97473275.

It is an arithmetic number, because the mean of its divisors is an integer number (2046937431).

Almost surely, 2^12671517365 is an apocalyptic number.

It is an amenable number.

12671517365 is a deficient number, since it is larger than the sum of its proper divisors (3703982083).

12671517365 is a wasteful number, since it uses less digits than its factorization.

12671517365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194946439.

The product of its digits is 264600, while the sum is 44.

The spelling of 12671517365 in words is "twelve billion, six hundred seventy-one million, five hundred seventeen thousand, three hundred sixty-five".