128862633398 has 4 divisors (see below), whose sum is σ = 193293950100. Its totient is φ = 64431316698.

The previous prime is 128862633353. The next prime is 128862633401. The reversal of 128862633398 is 893336268821.

It is a semiprime because it is the product of two primes.

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, 32215658348 + ... + 32215658351.

It is an arithmetic number, because the mean of its divisors is an integer number (48323487525).

Almost surely, 2^128862633398 is an apocalyptic number.

128862633398 is a deficient number, since it is larger than the sum of its proper divisors (64431316702).

128862633398 is an equidigital number, since it uses as much as digits as its factorization.

128862633398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64431316701.

The product of its digits is 17915904, while the sum is 59.

The spelling of 128862633398 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, six hundred thirty-three thousand, three hundred ninety-eight".