16338372197 has 4 divisors (see below), whose sum is σ = 18672425376. Its totient is φ = 14004319020.

The previous prime is 16338372191. The next prime is 16338372233. The reversal of 16338372197 is 79127383361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16338372197 - 2²⁴ = 16321594981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16338372191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167026579 + ... + 1167026592.

It is an arithmetic number, because the mean of its divisors is an integer number (4668106344).

Almost surely, 2^16338372197 is an apocalyptic number.

It is an amenable number.

16338372197 is a deficient number, since it is larger than the sum of its proper divisors (2334053179).

16338372197 is an equidigital number, since it uses as much as digits as its factorization.

16338372197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334053178.

The product of its digits is 1143072, while the sum is 50.

The spelling of 16338372197 in words is "sixteen billion, three hundred thirty-eight million, three hundred seventy-two thousand, one hundred ninety-seven".