16193792321 has 32 divisors (see below), whose sum is σ = 20362352640. Its totient is φ = 12557026944.

The previous prime is 16193792281. The next prime is 16193792339. The reversal of 16193792321 is 12329739161.

It is not a de Polignac number, because 16193792321 - 2¹⁴ = 16193775937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16193792521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1962821 + ... + 1971053.

It is an arithmetic number, because the mean of its divisors is an integer number (636323520).

Almost surely, 2^16193792321 is an apocalyptic number.

It is an amenable number.

16193792321 is a deficient number, since it is larger than the sum of its proper divisors (4168560319).

16193792321 is a wasteful number, since it uses less digits than its factorization.

16193792321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925.

The product of its digits is 122472, while the sum is 44.

The spelling of 16193792321 in words is "sixteen billion, one hundred ninety-three million, seven hundred ninety-two thousand, three hundred twenty-one".