128115194646 has 16 divisors (see below), whose sum is σ = 259317503424. Its totient is φ = 42190545864.

The previous prime is 128115194621. The next prime is 128115194653. The reversal of 128115194646 is 646491511821.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128115194595 and 128115194604.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 128629216 + ... + 128630211.

It is an arithmetic number, because the mean of its divisors is an integer number (16207343964).

Almost surely, 2^128115194646 is an apocalyptic number.

128115194646 is an abundant number, since it is smaller than the sum of its proper divisors (131202308778).

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

128115194646 is a wasteful number, since it uses less digits than its factorization.

128115194646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257259515.

The product of its digits is 414720, while the sum is 48.

The spelling of 128115194646 in words is "one hundred twenty-eight billion, one hundred fifteen million, one hundred ninety-four thousand, six hundred forty-six".