12547930018556 has 24 divisors (see below), whose sum is σ = 22323588750960. Its totient is φ = 6169805395200.

The previous prime is 12547930018549. The next prime is 12547930018621. The reversal of 12547930018556 is 65581003974521.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4294586 + ... + 6598433.

It is an arithmetic number, because the mean of its divisors is an integer number (930149531290).

It is a 1-persistent number, because it is pandigital, but 2⋅12547930018556 = 25095860037112 is not.

Almost surely, 2^{12547930018556} is an apocalyptic number.

It is an amenable number.

12547930018556 is a deficient number, since it is larger than the sum of its proper divisors (9775658732404).

12547930018556 is a wasteful number, since it uses less digits than its factorization.

12547930018556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10897805 (or 10897803 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 12547930018556 in words is "twelve trillion, five hundred forty-seven billion, nine hundred thirty million, eighteen thousand, five hundred fifty-six".