128207008441 has 4 divisors (see below), whose sum is σ = 128207941632. Its totient is φ = 128206075252.

The previous prime is 128207008417. The next prime is 128207008451. The reversal of 128207008441 is 144800702821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 144800702821 = 89 ⋅1626974189.

It is a cyclic number.

It is not a de Polignac number, because 128207008441 - 2¹¹ = 128207006393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128207008441.

It is not an unprimeable number, because it can be changed into a prime (128207008451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215461 + ... + 550306.

It is an arithmetic number, because the mean of its divisors is an integer number (32051985408).

Almost surely, 2^128207008441 is an apocalyptic number.

It is an amenable number.

128207008441 is a deficient number, since it is larger than the sum of its proper divisors (933191).

128207008441 is an equidigital number, since it uses as much as digits as its factorization.

128207008441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933190.

The product of its (nonzero) digits is 28672, while the sum is 37.

The spelling of 128207008441 in words is "one hundred twenty-eight billion, two hundred seven million, eight thousand, four hundred forty-one".