16404345365 has 8 divisors (see below), whose sum is σ = 19721604408. Its totient is φ = 13099216320.

The previous prime is 16404345341. The next prime is 16404345379. The reversal of 16404345365 is 56354340461.

16404345365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2981269201 + 13423076164 = 54601^2 + 115858^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16404345365 - 2¹⁴ = 16404328981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3029522 + ... + 3034931.

It is an arithmetic number, because the mean of its divisors is an integer number (2465200551).

Almost surely, 2^16404345365 is an apocalyptic number.

It is an amenable number.

16404345365 is a deficient number, since it is larger than the sum of its proper divisors (3317259043).

16404345365 is an equidigital number, since it uses as much as digits as its factorization.

16404345365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064999.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 16404345365 in words is "sixteen billion, four hundred four million, three hundred forty-five thousand, three hundred sixty-five".