12728559467346 has 16 divisors (see below), whose sum is σ = 25466831716608. Its totient is φ = 4241234358800.

The previous prime is 12728559467303. The next prime is 12728559467381. The reversal of 12728559467346 is 64376495582721.

It is a super-2 number, since 2×12728559467346² (a number of 27 digits) contains 22 as substring.

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, 404682210 + ... + 404713661.

It is an arithmetic number, because the mean of its divisors is an integer number (1591676982288).

Almost surely, 2^{12728559467346} is an apocalyptic number.

12728559467346 is an abundant number, since it is smaller than the sum of its proper divisors (12738272249262).

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

12728559467346 is a wasteful number, since it uses less digits than its factorization.

12728559467346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809398497.

The product of its digits is 609638400, while the sum is 69.

The spelling of 12728559467346 in words is "twelve trillion, seven hundred twenty-eight billion, five hundred fifty-nine million, four hundred sixty-seven thousand, three hundred forty-six".