16199896321 has 24 divisors (see below), whose sum is σ = 19082633280. Its totient is φ = 13711475232.

The previous prime is 16199896319. The next prime is 16199896357. The reversal of 16199896321 is 12369899161.

It is not a de Polignac number, because 16199896321 - 2¹ = 16199896319 is a prime.

It is a super-2 number, since 2×16199896321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16199896381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1247500 + ... + 1260418.

It is an arithmetic number, because the mean of its divisors is an integer number (795109720).

Almost surely, 2^16199896321 is an apocalyptic number.

It is an amenable number.

16199896321 is a deficient number, since it is larger than the sum of its proper divisors (2882736959).

16199896321 is a wasteful number, since it uses less digits than its factorization.

16199896321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13253 (or 13246 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 55.

The spelling of 16199896321 in words is "sixteen billion, one hundred ninety-nine million, eight hundred ninety-six thousand, three hundred twenty-one".