128526318371 has 4 divisors (see below), whose sum is σ = 140210529144. Its totient is φ = 116842107600.

The previous prime is 128526318367. The next prime is 128526318379. The reversal of 128526318371 is 173813625821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128526318371 - 2² = 128526318367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128526318379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842105370 + ... + 5842105391.

It is an arithmetic number, because the mean of its divisors is an integer number (35052632286).

Almost surely, 2^128526318371 is an apocalyptic number.

128526318371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128526318371 is a deficient number, since it is larger than the sum of its proper divisors (11684210773).

128526318371 is a wasteful number, since it uses less digits than its factorization.

128526318371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11684210772.

The product of its digits is 483840, while the sum is 47.

The spelling of 128526318371 in words is "one hundred twenty-eight billion, five hundred twenty-six million, three hundred eighteen thousand, three hundred seventy-one".