2150666165517 has 16 divisors (see below), whose sum is σ = 2888753176320. Its totient is φ = 1423216634112.

The previous prime is 2150666165509. The next prime is 2150666165521. The reversal of 2150666165517 is 7155616660512.

It is not a de Polignac number, because 2150666165517 - 2³ = 2150666165509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2150666165517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150666165507) 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, 4567168 + ... + 5016009.

It is an arithmetic number, because the mean of its divisors is an integer number (180547073520).

Almost surely, 2^{2150666165517} is an apocalyptic number.

It is an amenable number.

2150666165517 is a deficient number, since it is larger than the sum of its proper divisors (738087010803).

2150666165517 is a wasteful number, since it uses less digits than its factorization.

2150666165517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9583732.

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 2150666165517 in words is "two trillion, one hundred fifty billion, six hundred sixty-six million, one hundred sixty-five thousand, five hundred seventeen".