128311130517 has 8 divisors (see below), whose sum is σ = 171835171296. Its totient is φ = 85163921712.

The previous prime is 128311130513. The next prime is 128311130539. The reversal of 128311130517 is 715031113821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128311130517 - 2² = 128311130513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128311130513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94207198 + ... + 94208559.

It is an arithmetic number, because the mean of its divisors is an integer number (21479396412).

Almost surely, 2^128311130517 is an apocalyptic number.

It is an amenable number.

128311130517 is a deficient number, since it is larger than the sum of its proper divisors (43524040779).

128311130517 is a wasteful number, since it uses less digits than its factorization.

128311130517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188415987.

The product of its (nonzero) digits is 5040, while the sum is 33.

The spelling of 128311130517 in words is "one hundred twenty-eight billion, three hundred eleven million, one hundred thirty thousand, five hundred seventeen".