128611421133265 has 8 divisors (see below), whose sum is σ = 176381377554240. Its totient is φ = 88190688777072.

The previous prime is 128611421133131. The next prime is 128611421133301. The reversal of 128611421133265 is 562331124116821.

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

It is not a de Polignac number, because 128611421133265 - 2¹³ = 128611421125073 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1837306016155 + ... + 1837306016224.

It is an arithmetic number, because the mean of its divisors is an integer number (22047672194280).

Almost surely, 2^{128611421133265} is an apocalyptic number.

It is an amenable number.

128611421133265 is a deficient number, since it is larger than the sum of its proper divisors (47769956420975).

128611421133265 is an equidigital number, since it uses as much as digits as its factorization.

128611421133265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674612032391.

The product of its digits is 414720, while the sum is 46.

The spelling of 128611421133265 in words is "one hundred twenty-eight trillion, six hundred eleven billion, four hundred twenty-one million, one hundred thirty-three thousand, two hundred sixty-five".