16055201565 has 40 divisors (see below), whose sum is σ = 30994325208. Its totient is φ = 7904096640.

The previous prime is 16055201527. The next prime is 16055201567. The reversal of 16055201565 is 56510255061.

16055201565 is a `hidden beast` number, since 1 + 60 + 5 + 520 + 15 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 497379204 + 15557822361 = 22302^2 + 124731^2 .

It is not a de Polignac number, because 16055201565 - 2⁶ = 16055201501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16055201567) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1519446 + ... + 1529975.

Almost surely, 2^16055201565 is an apocalyptic number.

16055201565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16055201565 is a deficient number, since it is larger than the sum of its proper divisors (14939123643).

16055201565 is a wasteful number, since it uses less digits than its factorization.

16055201565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049451 (or 3049442 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 16055201565 in words is "sixteen billion, fifty-five million, two hundred one thousand, five hundred sixty-five".