201050128405 has 48 divisors (see below), whose sum is σ = 285699960000. Its totient is φ = 135386877696.

The previous prime is 201050128393. The next prime is 201050128427. The reversal of 201050128405 is 504821050102.

It is not a de Polignac number, because 201050128405 - 2⁵ = 201050128373 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 15156666 + ... + 15169924.

It is an arithmetic number, because the mean of its divisors is an integer number (5952082500).

Almost surely, 2^201050128405 is an apocalyptic number.

It is an amenable number.

201050128405 is a deficient number, since it is larger than the sum of its proper divisors (84649831595).

201050128405 is a wasteful number, since it uses less digits than its factorization.

201050128405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14386 (or 14379 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 201050128405 its reverse (504821050102), we get a palindrome (705871178507).

The spelling of 201050128405 in words is "two hundred one billion, fifty million, one hundred twenty-eight thousand, four hundred five".