12721655425192 has 32 divisors (see below), whose sum is σ = 27270542603520. Its totient is φ = 5450167558080.

The previous prime is 12721655425189. The next prime is 12721655425201. The reversal of 12721655425192 is 29152455612721.

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, 40895359 + ... + 41205262.

It is an arithmetic number, because the mean of its divisors is an integer number (852204456360).

Almost surely, 2^{12721655425192} is an apocalyptic number.

It is an amenable number.

12721655425192 is an abundant number, since it is smaller than the sum of its proper divisors (14548887178328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12721655425192 is a wasteful number, since it uses less digits than its factorization.

12721655425192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82103401 (or 82103397 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 52.

The spelling of 12721655425192 in words is "twelve trillion, seven hundred twenty-one billion, six hundred fifty-five million, four hundred twenty-five thousand, one hundred ninety-two".