12631918327552 has 18 divisors (see below), whose sum is σ = 25214493224648. Its totient is φ = 6315959163648.

The previous prime is 12631918327549. The next prime is 12631918327577. The reversal of 12631918327552 is 25572381913621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12631918327493 and 12631918327502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24671715228 + ... + 24671715739.

Almost surely, 2^{12631918327552} is an apocalyptic number.

It is an amenable number.

12631918327552 is a deficient number, since it is larger than the sum of its proper divisors (12582574897096).

12631918327552 is an frugal number, since it uses more digits than its factorization.

12631918327552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49343430983 (or 49343430969 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The spelling of 12631918327552 in words is "twelve trillion, six hundred thirty-one billion, nine hundred eighteen million, three hundred twenty-seven thousand, five hundred fifty-two".