16435318997 has 2 divisors, whose sum is σ = 16435318998. Its totient is φ = 16435318996.

The previous prime is 16435318993. The next prime is 16435319071. The reversal of 16435318997 is 79981353461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15511706116 + 923612881 = 124546^2 + 30391^2 .

It is a cyclic number.

It is not a de Polignac number, because 16435318997 - 2² = 16435318993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16435318993) 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 as a sum of consecutive naturals, namely, 8217659498 + 8217659499.

It is an arithmetic number, because the mean of its divisors is an integer number (8217659499).

Almost surely, 2^16435318997 is an apocalyptic number.

It is an amenable number.

16435318997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16435318997 is an equidigital number, since it uses as much as digits as its factorization.

16435318997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The spelling of 16435318997 in words is "sixteen billion, four hundred thirty-five million, three hundred eighteen thousand, nine hundred ninety-seven".