128426918525 has 12 divisors (see below), whose sum is σ = 160737694272. Its totient is φ = 101781331440.

The previous prime is 128426918507. The next prime is 128426918537. The reversal of 128426918525 is 525819624821.

It is not a de Polignac number, because 128426918525 - 2¹⁰ = 128426917501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24002357 + ... + 24007706.

It is an arithmetic number, because the mean of its divisors is an integer number (13394807856).

Almost surely, 2^128426918525 is an apocalyptic number.

It is an amenable number.

128426918525 is a deficient number, since it is larger than the sum of its proper divisors (32310775747).

128426918525 is a wasteful number, since it uses less digits than its factorization.

128426918525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48010180 (or 48010175 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 53.

The spelling of 128426918525 in words is "one hundred twenty-eight billion, four hundred twenty-six million, nine hundred eighteen thousand, five hundred twenty-five".