128463667229 has 4 divisors (see below), whose sum is σ = 128476407840. Its totient is φ = 128450926620.

The previous prime is 128463667223. The next prime is 128463667243. The reversal of 128463667229 is 922766364821.

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 a de Polignac number, because none of the positive numbers 2^k-128463667229 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 (128463667223) 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, 6355169 + ... + 6375350.

It is an arithmetic number, because the mean of its divisors is an integer number (32119101960).

Almost surely, 2^128463667229 is an apocalyptic number.

It is an amenable number.

128463667229 is a deficient number, since it is larger than the sum of its proper divisors (12740611).

128463667229 is a wasteful number, since it uses less digits than its factorization.

128463667229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12740610.

The product of its digits is 10450944, while the sum is 56.

The spelling of 128463667229 in words is "one hundred twenty-eight billion, four hundred sixty-three million, six hundred sixty-seven thousand, two hundred twenty-nine".