128784801270 has 32 divisors (see below), whose sum is σ = 309099247200. Its totient is φ = 34340866560.

The previous prime is 128784801253. The next prime is 128784801307. The reversal of 128784801270 is 72108487821.

It is a super-2 number, since 2×128784801270² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556956 + ... + 753504.

It is an arithmetic number, because the mean of its divisors is an integer number (9659351475).

Almost surely, 2^128784801270 is an apocalyptic number.

128784801270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128784801270 is an abundant number, since it is smaller than the sum of its proper divisors (180314445930).

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

128784801270 is a wasteful number, since it uses less digits than its factorization.

128784801270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218400.

The product of its (nonzero) digits is 401408, while the sum is 48.

The spelling of 128784801270 in words is "one hundred twenty-eight billion, seven hundred eighty-four million, eight hundred one thousand, two hundred seventy".