12909478455068 has 48 divisors (see below), whose sum is σ = 24362173532256. Its totient is φ = 5950200453120.

The previous prime is 12909478455053. The next prime is 12909478455079. The reversal of 12909478455068 is 86055487490921.

It is a junction number, because it is equal to n+sod(n) for n = 12909478454989 and 12909478455007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118301780 + ... + 118410852.

It is an arithmetic number, because the mean of its divisors is an integer number (507545281922).

Almost surely, 2^{12909478455068} is an apocalyptic number.

It is an amenable number.

12909478455068 is a deficient number, since it is larger than the sum of its proper divisors (11452695077188).

12909478455068 is a wasteful number, since it uses less digits than its factorization.

12909478455068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112134 (or 112132 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 68.

The spelling of 12909478455068 in words is "twelve trillion, nine hundred nine billion, four hundred seventy-eight million, four hundred fifty-five thousand, sixty-eight".