128568385734 has 8 divisors (see below), whose sum is σ = 257136771480. Its totient is φ = 42856128576.

The previous prime is 128568385681. The next prime is 128568385741. The reversal of 128568385734 is 437583865821.

It is a sphenic number, since it is the product of 3 distinct primes.

128568385734 is an admirable number.

It is a super-2 number, since 2×128568385734² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10714032139 + ... + 10714032150.

It is an arithmetic number, because the mean of its divisors is an integer number (32142096435).

Almost surely, 2^128568385734 is an apocalyptic number.

128568385734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128568385734 is a wasteful number, since it uses less digits than its factorization.

128568385734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428064294.

The product of its digits is 38707200, while the sum is 60.

The spelling of 128568385734 in words is "one hundred twenty-eight billion, five hundred sixty-eight million, three hundred eighty-five thousand, seven hundred thirty-four".