16631232193 has 2 divisors, whose sum is σ = 16631232194. Its totient is φ = 16631232192.

The previous prime is 16631232187. The next prime is 16631232217. The reversal of 16631232193 is 39123213661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14407921089 + 2223311104 = 120033^2 + 47152^2 .

It is a cyclic number.

It is not a de Polignac number, because 16631232193 - 2⁵ = 16631232161 is a prime.

It is not a weakly prime, because it can be changed into another prime (16631232103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8315616096 + 8315616097.

It is an arithmetic number, because the mean of its divisors is an integer number (8315616097).

Almost surely, 2^16631232193 is an apocalyptic number.

It is an amenable number.

16631232193 is a deficient number, since it is larger than the sum of its proper divisors (1).

16631232193 is an equidigital number, since it uses as much as digits as its factorization.

16631232193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The spelling of 16631232193 in words is "sixteen billion, six hundred thirty-one million, two hundred thirty-two thousand, one hundred ninety-three".