128862633399 has 8 divisors (see below), whose sum is σ = 171927486192. Its totient is φ = 85853101440.

The previous prime is 128862633353. The next prime is 128862633401. The reversal of 128862633399 is 993336268821.

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

It is not a de Polignac number, because 128862633399 - 2⁷ = 128862633271 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128862633199) 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, 13824772 + ... + 13834089.

It is an arithmetic number, because the mean of its divisors is an integer number (21490935774).

Almost surely, 2^128862633399 is an apocalyptic number.

128862633399 is a deficient number, since it is larger than the sum of its proper divisors (43064852793).

128862633399 is a wasteful number, since it uses less digits than its factorization.

128862633399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27660417.

The product of its digits is 20155392, while the sum is 60.

The spelling of 128862633399 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, six hundred thirty-three thousand, three hundred ninety-nine".