16005440255 has 16 divisors (see below), whose sum is σ = 22084990464. Its totient is φ = 10907822880.

The previous prime is 16005440251. The next prime is 16005440273. The reversal of 16005440255 is 55204450061.

It is not a de Polignac number, because 16005440255 - 2² = 16005440251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005440251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397051 + ... + 1408460.

It is an arithmetic number, because the mean of its divisors is an integer number (1380311904).

Almost surely, 2^16005440255 is an apocalyptic number.

16005440255 is a deficient number, since it is larger than the sum of its proper divisors (6079550209).

16005440255 is a wasteful number, since it uses less digits than its factorization.

16005440255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805686.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 16005440255 in words is "sixteen billion, five million, four hundred forty thousand, two hundred fifty-five".