128266051771 has 16 divisors (see below), whose sum is σ = 150978401280. Its totient is φ = 107429980320.

The previous prime is 128266051769. The next prime is 128266051801. The reversal of 128266051771 is 177150662821.

It is not a de Polignac number, because 128266051771 - 2¹ = 128266051769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128266051741) 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 15 ways as a sum of consecutive naturals, for example, 782731 + ... + 932308.

It is an arithmetic number, because the mean of its divisors is an integer number (9436150080).

Almost surely, 2^128266051771 is an apocalyptic number.

128266051771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128266051771 is a deficient number, since it is larger than the sum of its proper divisors (22712349509).

128266051771 is a wasteful number, since it uses less digits than its factorization.

128266051771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715586.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 128266051771 in words is "one hundred twenty-eight billion, two hundred sixty-six million, fifty-one thousand, seven hundred seventy-one".