16172129368 has 8 divisors (see below), whose sum is σ = 30322742580. Its totient is φ = 8086064680.

The previous prime is 16172129353. The next prime is 16172129399. The reversal of 16172129368 is 86392127161.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010758078 + ... + 1010758093.

Almost surely, 2^16172129368 is an apocalyptic number.

It is an amenable number.

16172129368 is a deficient number, since it is larger than the sum of its proper divisors (14150613212).

16172129368 is a wasteful number, since it uses less digits than its factorization.

16172129368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021516177 (or 2021516173 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The spelling of 16172129368 in words is "sixteen billion, one hundred seventy-two million, one hundred twenty-nine thousand, three hundred sixty-eight".