128613747488 has 18 divisors (see below), whose sum is σ = 253212309441. Its totient is φ = 64305859392.

The previous prime is 128613747467. The next prime is 128613747523. The reversal of 128613747488 is 884747316821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 126528181264 + 2085566224 = 355708^2 + 45668^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=253588.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1997006 + ... + 2060402.

Almost surely, 2^128613747488 is an apocalyptic number.

It is an amenable number.

128613747488 is a deficient number, since it is larger than the sum of its proper divisors (124598561953).

128613747488 is an frugal number, since it uses more digits than its factorization.

128613747488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126804 (or 63399 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 59.

The spelling of 128613747488 in words is "one hundred twenty-eight billion, six hundred thirteen million, seven hundred forty-seven thousand, four hundred eighty-eight".