16245536565 has 16 divisors (see below), whose sum is σ = 26380813248. Its totient is φ = 8534967936.

The previous prime is 16245536561. The next prime is 16245536669. The reversal of 16245536565 is 56563554261.

It is not a de Polignac number, because 16245536565 - 2² = 16245536561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16245536561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8081352 + ... + 8083361.

It is an arithmetic number, because the mean of its divisors is an integer number (1648800828).

Almost surely, 2^16245536565 is an apocalyptic number.

16245536565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16245536565 is a deficient number, since it is larger than the sum of its proper divisors (10135276683).

16245536565 is a wasteful number, since it uses less digits than its factorization.

16245536565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164788.

The product of its digits is 3240000, while the sum is 48.

The spelling of 16245536565 in words is "sixteen billion, two hundred forty-five million, five hundred thirty-six thousand, five hundred sixty-five".