128063799 has 12 divisors (see below), whose sum is σ = 185942016. Its totient is φ = 84932352.

The previous prime is 128063779. The next prime is 128063813. The reversal of 128063799 is 997360821.

128063799 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 637 + 9 + 9 = 666.

It is not a de Polignac number, because 128063799 - 2⁷ = 128063671 is a prime.

It is a super-2 number, since 2×128063799² = 32800673228624802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128063729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35127 + ... + 38600.

It is an arithmetic number, because the mean of its divisors is an integer number (15495168).

Almost surely, 2^128063799 is an apocalyptic number.

128063799 is a deficient number, since it is larger than the sum of its proper divisors (57878217).

128063799 is a wasteful number, since it uses less digits than its factorization.

128063799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73926 (or 73923 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 128063799 is about 11316.5276918320. The cubic root of 128063799 is about 504.0521369912.

The spelling of 128063799 in words is "one hundred twenty-eight million, sixty-three thousand, seven hundred ninety-nine".