128218479119 has 4 divisors (see below), whose sum is σ = 128252959440. Its totient is φ = 128183998800.

The previous prime is 128218479113. The next prime is 128218479121. The reversal of 128218479119 is 911974812821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128218479119 - 2¹² = 128218475023 is a prime.

It is a super-2 number, since 2×128218479119² (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 (128218479113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17234582 + ... + 17242019.

It is an arithmetic number, because the mean of its divisors is an integer number (32063239860).

Almost surely, 2^128218479119 is an apocalyptic number.

128218479119 is a deficient number, since it is larger than the sum of its proper divisors (34480321).

128218479119 is an equidigital number, since it uses as much as digits as its factorization.

128218479119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34480320.

The product of its digits is 580608, while the sum is 53.

The spelling of 128218479119 in words is "one hundred twenty-eight billion, two hundred eighteen million, four hundred seventy-nine thousand, one hundred nineteen".