128306725212 has 24 divisors (see below), whose sum is σ = 301365027712. Its totient is φ = 42485670000.

The previous prime is 128306725193. The next prime is 128306725213. The reversal of 128306725212 is 212527603821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128306725213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35402914 + ... + 35406537.

Almost surely, 2^128306725212 is an apocalyptic number.

128306725212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128306725212 is an abundant number, since it is smaller than the sum of its proper divisors (173058302500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128306725212 is a wasteful number, since it uses less digits than its factorization.

128306725212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70809609 (or 70809607 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 128306725212 in words is "one hundred twenty-eight billion, three hundred six million, seven hundred twenty-five thousand, two hundred twelve".