128663223301 has 4 divisors (see below), whose sum is σ = 134257276512. Its totient is φ = 123069170092.

The previous prime is 128663223203. The next prime is 128663223313. The reversal of 128663223301 is 103322366821.

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 128663223301 - 2⁷ = 128663223173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128663223371) 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, 2797026571 + ... + 2797026616.

It is an arithmetic number, because the mean of its divisors is an integer number (33564319128).

Almost surely, 2^128663223301 is an apocalyptic number.

It is an amenable number.

128663223301 is a deficient number, since it is larger than the sum of its proper divisors (5594053211).

128663223301 is an equidigital number, since it uses as much as digits as its factorization.

128663223301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594053210.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 128663223301 in words is "one hundred twenty-eight billion, six hundred sixty-three million, two hundred twenty-three thousand, three hundred one".