128345216615 has 32 divisors (see below), whose sum is σ = 195936537600. Its totient is φ = 80007396000.

The previous prime is 128345216609. The next prime is 128345216641. The reversal of 128345216615 is 516612543821.

It is not a de Polignac number, because 128345216615 - 2⁶ = 128345216551 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3382811 + ... + 3420540.

It is an arithmetic number, because the mean of its divisors is an integer number (6123016800).

Almost surely, 2^128345216615 is an apocalyptic number.

128345216615 is a deficient number, since it is larger than the sum of its proper divisors (67591320985).

128345216615 is an equidigital number, since it uses as much as digits as its factorization.

128345216615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803388 (or 6803374 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The spelling of 128345216615 in words is "one hundred twenty-eight billion, three hundred forty-five million, two hundred sixteen thousand, six hundred fifteen".