128817117334 has 4 divisors (see below), whose sum is σ = 193225676004. Its totient is φ = 64408558666.

The previous prime is 128817117329. The next prime is 128817117353. The reversal of 128817117334 is 433711718821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433711718821 = 431 ⋅1006291691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32204279332 + ... + 32204279335.

It is an arithmetic number, because the mean of its divisors is an integer number (48306419001).

Almost surely, 2^128817117334 is an apocalyptic number.

128817117334 is a deficient number, since it is larger than the sum of its proper divisors (64408558670).

128817117334 is an equidigital number, since it uses as much as digits as its factorization.

128817117334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64408558669.

The product of its digits is 225792, while the sum is 46.

The spelling of 128817117334 in words is "one hundred twenty-eight billion, eight hundred seventeen million, one hundred seventeen thousand, three hundred thirty-four".