128647042656 has 96 divisors (see below), whose sum is σ = 368467843968. Its totient is φ = 38976599040.

The previous prime is 128647042633. The next prime is 128647042673. The reversal of 128647042656 is 656240746821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 128647042599 and 128647042608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8754291 + ... + 8768973.

It is an arithmetic number, because the mean of its divisors is an integer number (3838206708).

Almost surely, 2^128647042656 is an apocalyptic number.

128647042656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128647042656 is an abundant number, since it is smaller than the sum of its proper divisors (239820801312).

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

128647042656 is a wasteful number, since it uses less digits than its factorization.

128647042656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23004 (or 22996 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 128647042656 in words is "one hundred twenty-eight billion, six hundred forty-seven million, forty-two thousand, six hundred fifty-six".