268609000128 has 56 divisors (see below), whose sum is σ = 812222456832. Its totient is φ = 76745428224.

The previous prime is 268609000111. The next prime is 268609000133. The reversal of 268609000128 is 821000906862.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 268609000128.

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, 99927600 + ... + 99930287.

Almost surely, 2^268609000128 is an apocalyptic number.

268609000128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

268609000128 is an abundant number, since it is smaller than the sum of its proper divisors (543613456704).

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

268609000128 is a wasteful number, since it uses less digits than its factorization.

268609000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199857909 (or 199857899 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 268609000128 in words is "two hundred sixty-eight billion, six hundred nine million, one hundred twenty-eight", and thus it is an aban number.