12728461556622 has 32 divisors (see below), whose sum is σ = 29171625449472. Its totient is φ = 3626953422624.

The previous prime is 12728461556599. The next prime is 12728461556647. The reversal of 12728461556622 is 22665516482721.

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, 406229118 + ... + 406260449.

It is an arithmetic number, because the mean of its divisors is an integer number (911613295296).

Almost surely, 2^{12728461556622} is an apocalyptic number.

12728461556622 is an abundant number, since it is smaller than the sum of its proper divisors (16443163892850).

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

12728461556622 is a wasteful number, since it uses less digits than its factorization.

12728461556622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812489952.

The product of its digits is 19353600, while the sum is 57.

The spelling of 12728461556622 in words is "twelve trillion, seven hundred twenty-eight billion, four hundred sixty-one million, five hundred fifty-six thousand, six hundred twenty-two".