12672733859721 has 192 divisors, whose sum is σ = 21846329406720. Its totient is φ = 7283498019840.

The previous prime is 12672733859717. The next prime is 12672733859767. The reversal of 12672733859721 is 12795833727621.

12672733859721 is a `hidden beast` number, since 1 + 2 + 6 + 7 + 2 + 7 + 3 + 38 + 597 + 2 + 1 = 666.

It is not a de Polignac number, because 12672733859721 - 2² = 12672733859717 is a prime.

It is a super-2 number, since 2×12672733859721² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12672733859021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 586391206 + ... + 586412816.

It is an arithmetic number, because the mean of its divisors is an integer number (113782965660).

Almost surely, 2^{12672733859721} is an apocalyptic number.

It is an amenable number.

12672733859721 is a deficient number, since it is larger than the sum of its proper divisors (9173595546999).

12672733859721 is a wasteful number, since it uses less digits than its factorization.

12672733859721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21878 (or 21866 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 12672733859721 in words is "twelve trillion, six hundred seventy-two billion, seven hundred thirty-three million, eight hundred fifty-nine thousand, seven hundred twenty-one".