128380036250 has 40 divisors (see below), whose sum is σ = 243681746880. Its totient is φ = 50701950000.

The previous prime is 128380036201. The next prime is 128380036271. The reversal of 128380036250 is 52630083821.

It is a Curzon 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 19 ways as a sum of consecutive naturals, for example, 551276 + ... + 748775.

It is an arithmetic number, because the mean of its divisors is an integer number (6092043672).

Almost surely, 2^128380036250 is an apocalyptic number.

128380036250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128380036250 is a deficient number, since it is larger than the sum of its proper divisors (115301710630).

128380036250 is an equidigital number, since it uses as much as digits as its factorization.

128380036250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300152 (or 1300137 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 128380036250 in words is "one hundred twenty-eight billion, three hundred eighty million, thirty-six thousand, two hundred fifty".