12656346995776 has 63 divisors (see below), whose sum is σ = 27606359148487. Its totient is φ = 5752742695040.

The previous prime is 12656346995749. The next prime is 12656346995807. The reversal of 12656346995776 is 67759964365621.

The square root of 12656346995776 is 3557576.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 313046475 + ... + 313086901.

Almost surely, 2^{12656346995776} is an apocalyptic number.

12656346995776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12656346995776 is the 3557576-th square number.

It is an amenable number.

12656346995776 is an abundant number, since it is smaller than the sum of its proper divisors (14950012152711).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12656346995776 is an frugal number, since it uses more digits than its factorization.

12656346995776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80888 (or 40440 counting only the distinct ones).

The product of its digits is 3086294400, while the sum is 76.

The spelling of 12656346995776 in words is "twelve trillion, six hundred fifty-six billion, three hundred forty-six million, nine hundred ninety-five thousand, seven hundred seventy-six".