16604037407 has 2 divisors, whose sum is σ = 16604037408. Its totient is φ = 16604037406.

The previous prime is 16604037397. The next prime is 16604037413. The reversal of 16604037407 is 70473040661.

It is a strong prime.

It is an emirp because it is prime and its reverse (70473040661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16604037407 - 2¹⁸ = 16603775263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16604037487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8302018703 + 8302018704.

It is an arithmetic number, because the mean of its divisors is an integer number (8302018704).

Almost surely, 2^16604037407 is an apocalyptic number.

16604037407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16604037407 is an equidigital number, since it uses as much as digits as its factorization.

16604037407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 16604037407 in words is "sixteen billion, six hundred four million, thirty-seven thousand, four hundred seven".