128550851358 has 32 divisors (see below), whose sum is σ = 277947795840. Its totient is φ = 39497842080.

The previous prime is 128550851357. The next prime is 128550851389. The reversal of 128550851358 is 853158055821.

It is a super-2 number, since 2×128550851358² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128550851358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128550851357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15234148 + ... + 15242583.

It is an arithmetic number, because the mean of its divisors is an integer number (8685868620).

Almost surely, 2^128550851358 is an apocalyptic number.

128550851358 is an abundant number, since it is smaller than the sum of its proper divisors (149396944482).

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

128550851358 is a wasteful number, since it uses less digits than its factorization.

128550851358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30476792.

The product of its (nonzero) digits is 1920000, while the sum is 51.

The spelling of 128550851358 in words is "one hundred twenty-eight billion, five hundred fifty million, eight hundred fifty-one thousand, three hundred fifty-eight".