128527439039 has 8 divisors (see below), whose sum is σ = 129242910720. Its totient is φ = 127812411000.

The previous prime is 128527439023. The next prime is 128527439063. The reversal of 128527439039 is 930934725821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128527439039 - 2⁴ = 128527439023 is a prime.

It is a super-2 number, since 2×128527439039² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128527439099) 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 7 ways as a sum of consecutive naturals, for example, 478814 + ... + 697364.

It is an arithmetic number, because the mean of its divisors is an integer number (16155363840).

Almost surely, 2^128527439039 is an apocalyptic number.

128527439039 is a deficient number, since it is larger than the sum of its proper divisors (715471681).

128527439039 is a wasteful number, since it uses less digits than its factorization.

128527439039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221821.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 128527439039 in words is "one hundred twenty-eight billion, five hundred twenty-seven million, four hundred thirty-nine thousand, thirty-nine".