128896201777 has 8 divisors (see below), whose sum is σ = 152389598400. Its totient is φ = 106672718544.

The previous prime is 128896201751. The next prime is 128896201781. The reversal of 128896201777 is 777102698821.

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

It is not a de Polignac number, because 128896201777 - 2²³ = 128887813169 is a prime.

It is a super-2 number, since 2×128896201777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128896201747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317478127 + ... + 317478532.

It is an arithmetic number, because the mean of its divisors is an integer number (19048699800).

Almost surely, 2^128896201777 is an apocalyptic number.

It is an amenable number.

128896201777 is a deficient number, since it is larger than the sum of its proper divisors (23493396623).

128896201777 is an equidigital number, since it uses as much as digits as its factorization.

128896201777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634956695.

The product of its (nonzero) digits is 4741632, while the sum is 58.

The spelling of 128896201777 in words is "one hundred twenty-eight billion, eight hundred ninety-six million, two hundred one thousand, seven hundred seventy-seven".