128281321137306 has 32 divisors (see below), whose sum is σ = 262822432981248. Its totient is φ = 41717159112960.

The previous prime is 128281321137247. The next prime is 128281321137337. The reversal of 128281321137306 is 603731123182821.

It is a super-3 number, since 3×128281321137306³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 28668591 + ... + 32839773.

It is an arithmetic number, because the mean of its divisors is an integer number (8213201030664).

Almost surely, 2^{128281321137306} is an apocalyptic number.

128281321137306 is an abundant number, since it is smaller than the sum of its proper divisors (134541111843942).

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

128281321137306 is a wasteful number, since it uses less digits than its factorization.

128281321137306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296246.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 128281321137306 in words is "one hundred twenty-eight trillion, two hundred eighty-one billion, three hundred twenty-one million, one hundred thirty-seven thousand, three hundred six".