128376513664 has 32 divisors (see below), whose sum is σ = 292285814400. Its totient is φ = 55018505472.

The previous prime is 128376513653. The next prime is 128376513689. The reversal of 128376513664 is 466315673821.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71637784 + ... + 71639575.

It is an arithmetic number, because the mean of its divisors is an integer number (9133931700).

Almost surely, 2^128376513664 is an apocalyptic number.

128376513664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128376513664 is an abundant number, since it is smaller than the sum of its proper divisors (163909300736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128376513664 is an equidigital number, since it uses as much as digits as its factorization.

128376513664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143277380 (or 143277368 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 128376513664 in words is "one hundred twenty-eight billion, three hundred seventy-six million, five hundred thirteen thousand, six hundred sixty-four".