128017503381 has 16 divisors (see below), whose sum is σ = 170888361408. Its totient is φ = 85245888000.

The previous prime is 128017503379. The next prime is 128017503389. The reversal of 128017503381 is 183305710821.

It is not a de Polignac number, because 128017503381 - 2¹ = 128017503379 is a prime.

It is a super-2 number, since 2×128017503381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128017503389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10400931 + ... + 10413231.

It is an arithmetic number, because the mean of its divisors is an integer number (10680522588).

Almost surely, 2^128017503381 is an apocalyptic number.

It is an amenable number.

128017503381 is a deficient number, since it is larger than the sum of its proper divisors (42870858027).

128017503381 is a wasteful number, since it uses less digits than its factorization.

128017503381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16052.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 128017503381 in words is "one hundred twenty-eight billion, seventeen million, five hundred three thousand, three hundred eighty-one".