12676312865161 has 81 divisors (see below), whose sum is σ = 14749075127829. Its totient is φ = 10886220945600.

The previous prime is 12676312865131. The next prime is 12676312865171. The reversal of 12676312865161 is 16156821367621.

The square root of 12676312865161 is 3560381.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7425248954761 + 5251063910400 = 2724931^2 + 2291520^2 .

It is not a de Polignac number, because 12676312865161 - 2³⁵ = 12641953126793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12676312865131) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 64346765715 + ... + 64346765911.

Almost surely, 2^{12676312865161} is an apocalyptic number.

12676312865161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12676312865161 is the 3560381-st square number.

12676312865161 is the 1780191-st centered octagonal number.

It is an amenable number.

12676312865161 is a deficient number, since it is larger than the sum of its proper divisors (2072762262668).

12676312865161 is an frugal number, since it uses more digits than its factorization.

12676312865161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 292 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The spelling of 12676312865161 in words is "twelve trillion, six hundred seventy-six billion, three hundred twelve million, eight hundred sixty-five thousand, one hundred sixty-one".