128158475519 has 16 divisors (see below), whose sum is σ = 130636800000. Its totient is φ = 125704729920.

The previous prime is 128158475503. The next prime is 128158475561. The reversal of 128158475519 is 915574851821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 128158475519 - 2⁴ = 128158475503 is a prime.

It is a super-2 number, since 2×128158475519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128158477519) 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, 18540674 + ... + 18547584.

It is an arithmetic number, because the mean of its divisors is an integer number (8164800000).

Almost surely, 2^128158475519 is an apocalyptic number.

128158475519 is a deficient number, since it is larger than the sum of its proper divisors (2478324481).

128158475519 is a wasteful number, since it uses less digits than its factorization.

128158475519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8638.

The product of its digits is 4032000, while the sum is 56.

The spelling of 128158475519 in words is "one hundred twenty-eight billion, one hundred fifty-eight million, four hundred seventy-five thousand, five hundred nineteen".