16400565353 has 4 divisors (see below), whose sum is σ = 16749513600. Its totient is φ = 16051617108.

The previous prime is 16400565323. The next prime is 16400565463. The reversal of 16400565353 is 35356500461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16400565353 - 2³⁰ = 15326823529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16400565323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174474053 + ... + 174474146.

It is an arithmetic number, because the mean of its divisors is an integer number (4187378400).

Almost surely, 2^16400565353 is an apocalyptic number.

It is an amenable number.

16400565353 is a deficient number, since it is larger than the sum of its proper divisors (348948247).

16400565353 is an equidigital number, since it uses as much as digits as its factorization.

16400565353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348948246.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 16400565353 in words is "sixteen billion, four hundred million, five hundred sixty-five thousand, three hundred fifty-three".