128635223213 has 12 divisors (see below), whose sum is σ = 149648097312. Its totient is φ = 110250506520.

The previous prime is 128635223207. The next prime is 128635223257. The reversal of 128635223213 is 312322536821.

It is not a de Polignac number, because 128635223213 - 2¹⁰ = 128635222189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128635223273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 615056 + ... + 797222.

It is an arithmetic number, because the mean of its divisors is an integer number (12470674776).

Almost surely, 2^128635223213 is an apocalyptic number.

It is an amenable number.

128635223213 is a deficient number, since it is larger than the sum of its proper divisors (21012874099).

128635223213 is a wasteful number, since it uses less digits than its factorization.

128635223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196592 (or 196585 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The spelling of 128635223213 in words is "one hundred twenty-eight billion, six hundred thirty-five million, two hundred twenty-three thousand, two hundred thirteen".