128399025962 has 8 divisors (see below), whose sum is σ = 192681885792. Its totient is φ = 64171730700.

The previous prime is 128399025961. The next prime is 128399025967. The reversal of 128399025962 is 269520993821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128399025898 and 128399025907.

It is not an unprimeable number, because it can be changed into a prime (128399025961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13885364 + ... + 13894607.

It is an arithmetic number, because the mean of its divisors is an integer number (24085235724).

Almost surely, 2^128399025962 is an apocalyptic number.

128399025962 is a deficient number, since it is larger than the sum of its proper divisors (64282859830).

128399025962 is a wasteful number, since it uses less digits than its factorization.

128399025962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782284.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 128399025962 in words is "one hundred twenty-eight billion, three hundred ninety-nine million, twenty-five thousand, nine hundred sixty-two".