128092541905 has 8 divisors (see below), whose sum is σ = 153750967272. Its totient is φ = 102447422208.

The previous prime is 128092541881. The next prime is 128092541933. The reversal of 128092541905 is 509145290821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80147308609 + 47945233296 = 283103^2 + 218964^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 128092541905 - 2⁷ = 128092541777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3305224 + ... + 3343753.

It is an arithmetic number, because the mean of its divisors is an integer number (19218870909).

Almost surely, 2^128092541905 is an apocalyptic number.

It is an amenable number.

128092541905 is a deficient number, since it is larger than the sum of its proper divisors (25658425367).

128092541905 is an equidigital number, since it uses as much as digits as its factorization.

128092541905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652835.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 128092541905 in words is "one hundred twenty-eight billion, ninety-two million, five hundred forty-one thousand, nine hundred five".