16191631073 has 2 divisors, whose sum is σ = 16191631074. Its totient is φ = 16191631072.

The previous prime is 16191631061. The next prime is 16191631091. The reversal of 16191631073 is 37013619161.

16191631073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10059488209 + 6132142864 = 100297^2 + 78308^2 .

It is a cyclic number.

It is not a de Polignac number, because 16191631073 - 2⁶ = 16191631009 is a prime.

It is not a weakly prime, because it can be changed into another prime (16191631373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8095815536 + 8095815537.

It is an arithmetic number, because the mean of its divisors is an integer number (8095815537).

Almost surely, 2^16191631073 is an apocalyptic number.

It is an amenable number.

16191631073 is a deficient number, since it is larger than the sum of its proper divisors (1).

16191631073 is an equidigital number, since it uses as much as digits as its factorization.

16191631073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 16191631073 in words is "sixteen billion, one hundred ninety-one million, six hundred thirty-one thousand, seventy-three".