12731883821672 has 8 divisors (see below), whose sum is σ = 23872282165650. Its totient is φ = 6365941910832.

The previous prime is 12731883821651. The next prime is 12731883821707. The reversal of 12731883821672 is 27612838813721.

It can be written as a sum of positive squares in only one way, i.e., 12725015721796 + 6868099876 = 3567214^2 + 82874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 795742738847 + ... + 795742738862.

Almost surely, 2^{12731883821672} is an apocalyptic number.

It is an amenable number.

12731883821672 is a deficient number, since it is larger than the sum of its proper divisors (11140398343978).

12731883821672 is a wasteful number, since it uses less digits than its factorization.

12731883821672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591485477715 (or 1591485477711 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 59.

The spelling of 12731883821672 in words is "twelve trillion, seven hundred thirty-one billion, eight hundred eighty-three million, eight hundred twenty-one thousand, six hundred seventy-two".