16199999997 has 16 divisors (see below), whose sum is σ = 22151154432. Its totient is φ = 10526330880.

The previous prime is 16199999993. The next prime is 16199999999. The reversal of 16199999997 is 79999999161.

It is not a de Polignac number, because 16199999997 - 2² = 16199999993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16199999993) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 204388 + ... + 272349.

It is an arithmetic number, because the mean of its divisors is an integer number (1384447152).

Almost surely, 2^16199999997 is an apocalyptic number.

It is an amenable number.

16199999997 is a deficient number, since it is larger than the sum of its proper divisors (5951154435).

16199999997 is a wasteful number, since it uses less digits than its factorization.

16199999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477028.

The product of its digits is 200884698, while the sum is 78.

The spelling of 16199999997 in words is "sixteen billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".