128616230229 has 4 divisors (see below), whose sum is σ = 171488306976. Its totient is φ = 85744153484.

The previous prime is 128616230227. The next prime is 128616230233. The reversal of 128616230229 is 922032616821.

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 an emirpimes, since its reverse is a distinct semiprime: 922032616821 = 3 ⋅307344205607.

It is a cyclic number.

It is not a de Polignac number, because 128616230229 - 2¹ = 128616230227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128616230227) 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, 21436038369 + ... + 21436038374.

It is an arithmetic number, because the mean of its divisors is an integer number (42872076744).

Almost surely, 2^128616230229 is an apocalyptic number.

It is an amenable number.

128616230229 is a deficient number, since it is larger than the sum of its proper divisors (42872076747).

128616230229 is an equidigital number, since it uses as much as digits as its factorization.

128616230229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42872076746.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 128616230229 in words is "one hundred twenty-eight billion, six hundred sixteen million, two hundred thirty thousand, two hundred twenty-nine".