128050421445 has 24 divisors (see below), whose sum is σ = 223701743616. Its totient is φ = 67755810528.

The previous prime is 128050421413. The next prime is 128050421453. The reversal of 128050421445 is 544124050821.

128050421445 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 504 + 2 + 144 + 5 = 666.

It is not a de Polignac number, because 128050421445 - 2⁵ = 128050421413 is a prime.

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, 11197297 + ... + 11208726.

It is an arithmetic number, because the mean of its divisors is an integer number (9320905984).

Almost surely, 2^128050421445 is an apocalyptic number.

128050421445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128050421445 is a deficient number, since it is larger than the sum of its proper divisors (95651322171).

128050421445 is a wasteful number, since it uses less digits than its factorization.

128050421445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22406161 (or 22406158 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The spelling of 128050421445 in words is "one hundred twenty-eight billion, fifty million, four hundred twenty-one thousand, four hundred forty-five".