16909431607 has 2 divisors, whose sum is σ = 16909431608. Its totient is φ = 16909431606.

The previous prime is 16909431569. The next prime is 16909431613. The reversal of 16909431607 is 70613490961.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16909431607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16909435607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8454715803 + 8454715804.

It is an arithmetic number, because the mean of its divisors is an integer number (8454715804).

Almost surely, 2^16909431607 is an apocalyptic number.

16909431607 is a deficient number, since it is larger than the sum of its proper divisors (1).

16909431607 is an equidigital number, since it uses as much as digits as its factorization.

16909431607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 16909431607 in words is "sixteen billion, nine hundred nine million, four hundred thirty-one thousand, six hundred seven".