128546344816 has 10 divisors (see below), whose sum is σ = 249058543112. Its totient is φ = 64273172400.

The previous prime is 128546344807. The next prime is 128546344837. The reversal of 128546344816 is 618443645821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4017073260 + ... + 4017073291.

Almost surely, 2^128546344816 is an apocalyptic number.

128546344816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128546344816 is a deficient number, since it is larger than the sum of its proper divisors (120512198296).

128546344816 is an equidigital number, since it uses as much as digits as its factorization.

128546344816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034146559 (or 8034146553 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 52.

The spelling of 128546344816 in words is "one hundred twenty-eight billion, five hundred forty-six million, three hundred forty-four thousand, eight hundred sixteen".