15005666165601 has 8 divisors (see below), whose sum is σ = 20090573788384. Its totient is φ = 9962267993280.

The previous prime is 15005666165573. The next prime is 15005666165713. The reversal of 15005666165601 is 10656166650051.

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

It is not a de Polignac number, because 15005666165601 - 2⁷ = 15005666165473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15005666165101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10377361771 + ... + 10377363216.

It is an arithmetic number, because the mean of its divisors is an integer number (2511321723548).

Almost surely, 2^{15005666165601} is an apocalyptic number.

It is an amenable number.

15005666165601 is a deficient number, since it is larger than the sum of its proper divisors (5084907622783).

15005666165601 is a wasteful number, since it uses less digits than its factorization.

15005666165601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20754725231.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 15005666165601 in words is "fifteen trillion, five billion, six hundred sixty-six million, one hundred sixty-five thousand, six hundred one".