128877303956 has 48 divisors (see below), whose sum is σ = 237394886400. Its totient is φ = 61129100928.

The previous prime is 128877303953. The next prime is 128877303979. The reversal of 128877303956 is 659303778821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a junction number, because it is equal to n+sod(n) for n = 128877303895 and 128877303904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128877303953) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16674965 + ... + 16682691.

It is an arithmetic number, because the mean of its divisors is an integer number (4945726800).

Almost surely, 2^128877303956 is an apocalyptic number.

It is an amenable number.

128877303956 is a deficient number, since it is larger than the sum of its proper divisors (108517582444).

128877303956 is a wasteful number, since it uses less digits than its factorization.

128877303956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10256 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 128877303956 in words is "one hundred twenty-eight billion, eight hundred seventy-seven million, three hundred three thousand, nine hundred fifty-six".