128699117446 has 16 divisors (see below), whose sum is σ = 204279314688. Its totient is φ = 60684824200.

The previous prime is 128699117431. The next prime is 128699117461. The reversal of 128699117446 is 644711996821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128699117431) and next prime (128699117461).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19699600 + ... + 19706131.

It is an arithmetic number, because the mean of its divisors is an integer number (12767457168).

Almost surely, 2^128699117446 is an apocalyptic number.

128699117446 is a deficient number, since it is larger than the sum of its proper divisors (75580197242).

128699117446 is a wasteful number, since it uses less digits than its factorization.

128699117446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39405827.

The product of its digits is 5225472, while the sum is 58.

The spelling of 128699117446 in words is "one hundred twenty-eight billion, six hundred ninety-nine million, one hundred seventeen thousand, four hundred forty-six".