128784801273 has 8 divisors (see below), whose sum is σ = 171717282048. Its totient is φ = 85854427344.

The previous prime is 128784801253. The next prime is 128784801307. The reversal of 128784801273 is 372108487821.

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

It is not a de Polignac number, because 128784801273 - 2⁵ = 128784801241 is a prime.

It is a super-2 number, since 2×128784801273² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128784801253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 378090 + ... + 632867.

It is an arithmetic number, because the mean of its divisors is an integer number (21464660256).

Almost surely, 2^128784801273 is an apocalyptic number.

It is an amenable number.

128784801273 is a deficient number, since it is larger than the sum of its proper divisors (42932480775).

128784801273 is a wasteful number, since it uses less digits than its factorization.

128784801273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053423.

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 128784801273 in words is "one hundred twenty-eight billion, seven hundred eighty-four million, eight hundred one thousand, two hundred seventy-three".