128215600019 has 8 divisors (see below), whose sum is σ = 141810186000. Its totient is φ = 115154135136.

The previous prime is 128215600001. The next prime is 128215600027. The reversal of 128215600019 is 910006512821.

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

It is a cyclic number.

It is not a de Polignac number, because 128215600019 - 2⁸ = 128215599763 is a prime.

It is a super-2 number, since 2×128215600019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128215600619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133279769 + ... + 133280730.

It is an arithmetic number, because the mean of its divisors is an integer number (17726273250).

Almost surely, 2^128215600019 is an apocalyptic number.

128215600019 is a deficient number, since it is larger than the sum of its proper divisors (13594585981).

128215600019 is a wasteful number, since it uses less digits than its factorization.

128215600019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266560549.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 128215600019 in words is "one hundred twenty-eight billion, two hundred fifteen million, six hundred thousand, nineteen".