12680786881 has 9 divisors (see below), whose sum is σ = 14752036449. Its totient is φ = 10868570244.

The previous prime is 12680786873. The next prime is 12680786891. The reversal of 12680786881 is 18868708621.

It is a happy number.

The square root of 12680786881 is 112609.

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

It is not a de Polignac number, because 12680786881 - 2³ = 12680786873 is a prime.

It is a super-2 number, since 2×12680786881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12680786891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 780220 + ... + 796306.

It is an arithmetic number, because the mean of its divisors is an integer number (1639115161).

Almost surely, 2^12680786881 is an apocalyptic number.

12680786881 is the 112609-th square number.

12680786881 is the 56305-th centered octagonal number.

It is an amenable number.

12680786881 is a deficient number, since it is larger than the sum of its proper divisors (2071249568).

12680786881 is an frugal number, since it uses more digits than its factorization.

12680786881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32188 (or 16094 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 55.

The spelling of 12680786881 in words is "twelve billion, six hundred eighty million, seven hundred eighty-six thousand, eight hundred eighty-one".