12416864681 has 8 divisors (see below), whose sum is σ = 13377289800. Its totient is φ = 11457194112.

The previous prime is 12416864671. The next prime is 12416864687. The reversal of 12416864681 is 18646861421.

It can be written as a sum of positive squares in 4 ways, for example, as 6668192281 + 5748672400 = 81659^2 + 75820^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-12416864681 is a prime.

It is a super-2 number, since 2×12416864681² (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 (12416864687) 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, 154220 + ... + 220493.

It is an arithmetic number, because the mean of its divisors is an integer number (1672161225).

Almost surely, 2^12416864681 is an apocalyptic number.

It is an amenable number.

12416864681 is a deficient number, since it is larger than the sum of its proper divisors (960425119).

12416864681 is a wasteful number, since it uses less digits than its factorization.

12416864681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377275.

The product of its digits is 442368, while the sum is 47.

The spelling of 12416864681 in words is "twelve billion, four hundred sixteen million, eight hundred sixty-four thousand, six hundred eighty-one".