128345572950 has 48 divisors (see below), whose sum is σ = 363768026880. Its totient is φ = 29336130720.

The previous prime is 128345572913. The next prime is 128345572967. The reversal of 128345572950 is 59275543821.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128345572893 and 128345572902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61115890 + ... + 61117989.

It is an arithmetic number, because the mean of its divisors is an integer number (7578500560).

Almost surely, 2^128345572950 is an apocalyptic number.

128345572950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128345572950 is an abundant number, since it is smaller than the sum of its proper divisors (235422453930).

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

128345572950 is a wasteful number, since it uses less digits than its factorization.

128345572950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122233901 (or 122233896 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 128345572950 in words is "one hundred twenty-eight billion, three hundred forty-five million, five hundred seventy-two thousand, nine hundred fifty".