16005055501 has 8 divisors (see below), whose sum is σ = 17040159864. Its totient is φ = 14980354560.

The previous prime is 16005055477. The next prime is 16005055513. The reversal of 16005055501 is 10555050061.

It can be written as a sum of positive squares in 4 ways, for example, as 497334601 + 15507720900 = 22301^2 + 124530^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16005055501 - 2¹¹ = 16005053453 is a prime.

It is a super-2 number, since 2×16005055501² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16005055501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005055571) 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 7 ways as a sum of consecutive naturals, for example, 2597680 + ... + 2603833.

It is an arithmetic number, because the mean of its divisors is an integer number (2130019983).

Almost surely, 2^16005055501 is an apocalyptic number.

It is an amenable number.

16005055501 is a deficient number, since it is larger than the sum of its proper divisors (1035104363).

16005055501 is a wasteful number, since it uses less digits than its factorization.

16005055501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201711.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 16005055501 in words is "sixteen billion, five million, fifty-five thousand, five hundred one".