128885040280 has 32 divisors (see below), whose sum is σ = 293249678400. Its totient is φ = 50974756096.

The previous prime is 128885040241. The next prime is 128885040283. The reversal of 128885040280 is 82040588821.

128885040280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×128885040280² (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 128885040280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128885040283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18098272 + ... + 18105391.

It is an arithmetic number, because the mean of its divisors is an integer number (9164052450).

Almost surely, 2^128885040280 is an apocalyptic number.

128885040280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128885040280 is an abundant number, since it is smaller than the sum of its proper divisors (164364638120).

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

128885040280 is a wasteful number, since it uses less digits than its factorization.

128885040280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36203763 (or 36203759 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 46.

The spelling of 128885040280 in words is "one hundred twenty-eight billion, eight hundred eighty-five million, forty thousand, two hundred eighty".