128228001950 has 12 divisors (see below), whose sum is σ = 238504083720. Its totient is φ = 51291200760.

The previous prime is 128228001919. The next prime is 128228002027. The reversal of 128228001950 is 59100822821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282279970 + ... + 1282280069.

It is an arithmetic number, because the mean of its divisors is an integer number (19875340310).

Almost surely, 2^128228001950 is an apocalyptic number.

128228001950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128228001950 is a deficient number, since it is larger than the sum of its proper divisors (110276081770).

128228001950 is a wasteful number, since it uses less digits than its factorization.

128228001950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564560051 (or 2564560046 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 128228001950 in words is "one hundred twenty-eight billion, two hundred twenty-eight million, one thousand, nine hundred fifty".