128730396213 has 6 divisors (see below), whose sum is σ = 185943905654. Its totient is φ = 85820264136.

The previous prime is 128730396211. The next prime is 128730396217. The reversal of 128730396213 is 312693037821.

128730396213 is a `hidden beast` number, since 1 + 287 + 303 + 9 + 62 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 101288154564 + 27442241649 = 318258^2 + 165657^2 .

It is not a de Polignac number, because 128730396213 - 2¹ = 128730396211 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 (128730396211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7151688670 + ... + 7151688687.

Almost surely, 2^128730396213 is an apocalyptic number.

It is an amenable number.

128730396213 is a deficient number, since it is larger than the sum of its proper divisors (57213509441).

128730396213 is a wasteful number, since it uses less digits than its factorization.

128730396213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14303377363 (or 14303377360 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 128730396213 in words is "one hundred twenty-eight billion, seven hundred thirty million, three hundred ninety-six thousand, two hundred thirteen".