128245137320 has 32 divisors (see below), whose sum is σ = 288576414720. Its totient is φ = 51293636160.

The previous prime is 128245137313. The next prime is 128245137323. The reversal of 128245137320 is 23731542821.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (128245137323) 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, 353705 + ... + 617735.

It is an arithmetic number, because the mean of its divisors is an integer number (9018012960).

Almost surely, 2^128245137320 is an apocalyptic number.

128245137320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128245137320 is an abundant number, since it is smaller than the sum of its proper divisors (160331277400).

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

128245137320 is a wasteful number, since it uses less digits than its factorization.

128245137320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276185 (or 276181 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 128245137320 in words is "one hundred twenty-eight billion, two hundred forty-five million, one hundred thirty-seven thousand, three hundred twenty".