16447332697 has 2 divisors, whose sum is σ = 16447332698. Its totient is φ = 16447332696.

The previous prime is 16447332679. The next prime is 16447332731. The reversal of 16447332697 is 79623374461.

16447332697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (16447332679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15840991321 + 606341376 = 125861^2 + 24624^2 .

It is a cyclic number.

It is not a de Polignac number, because 16447332697 - 2²⁷ = 16313114969 is a prime.

It is not a weakly prime, because it can be changed into another prime (16447332607) 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, 8223666348 + 8223666349.

It is an arithmetic number, because the mean of its divisors is an integer number (8223666349).

Almost surely, 2^16447332697 is an apocalyptic number.

It is an amenable number.

16447332697 is a deficient number, since it is larger than the sum of its proper divisors (1).

16447332697 is an equidigital number, since it uses as much as digits as its factorization.

16447332697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 52.

The spelling of 16447332697 in words is "sixteen billion, four hundred forty-seven million, three hundred thirty-two thousand, six hundred ninety-seven".