16356544465 has 8 divisors (see below), whose sum is σ = 20084315328. Its totient is φ = 12780927600.

The previous prime is 16356544429. The next prime is 16356544487. The reversal of 16356544465 is 56444565361.

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

It is not a de Polignac number, because 16356544465 - 2¹¹ = 16356542417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38038261 + ... + 38038690.

It is an arithmetic number, because the mean of its divisors is an integer number (2510539416).

Almost surely, 2^16356544465 is an apocalyptic number.

It is an amenable number.

16356544465 is a deficient number, since it is larger than the sum of its proper divisors (3727770863).

16356544465 is an equidigital number, since it uses as much as digits as its factorization.

16356544465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76076999.

The product of its digits is 5184000, while the sum is 49.

The spelling of 16356544465 in words is "sixteen billion, three hundred fifty-six million, five hundred forty-four thousand, four hundred sixty-five".