128541321033 has 4 divisors (see below), whose sum is σ = 171388428048. Its totient is φ = 85694214020.

The previous prime is 128541321023. The next prime is 128541321049. The reversal of 128541321033 is 330123145821.

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.

It is a cyclic number.

It is not a de Polignac number, because 128541321033 - 2⁶ = 128541320969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128541320985 and 128541321003.

It is not an unprimeable number, because it can be changed into a prime (128541321023) 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, 21423553503 + ... + 21423553508.

It is an arithmetic number, because the mean of its divisors is an integer number (42847107012).

Almost surely, 2^128541321033 is an apocalyptic number.

It is an amenable number.

128541321033 is a deficient number, since it is larger than the sum of its proper divisors (42847107015).

128541321033 is an equidigital number, since it uses as much as digits as its factorization.

128541321033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42847107014.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 128541321033 its reverse (330123145821), we get a palindrome (458664466854).

The spelling of 128541321033 in words is "one hundred twenty-eight billion, five hundred forty-one million, three hundred twenty-one thousand, thirty-three".