128530738357 has 24 divisors (see below), whose sum is σ = 157411537440. Its totient is φ = 104352948000.

The previous prime is 128530738279. The next prime is 128530738361. The reversal of 128530738357 is 753837035821.

It is a de Polignac number, because none of the positive numbers 2^k-128530738357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128530738397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9769858 + ... + 9783004.

It is an arithmetic number, because the mean of its divisors is an integer number (6558814060).

Almost surely, 2^128530738357 is an apocalyptic number.

It is an amenable number.

128530738357 is a deficient number, since it is larger than the sum of its proper divisors (28880799083).

128530738357 is a wasteful number, since it uses less digits than its factorization.

128530738357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23681 (or 23674 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 128530738357 in words is "one hundred twenty-eight billion, five hundred thirty million, seven hundred thirty-eight thousand, three hundred fifty-seven".