2166151011727 has 8 divisors (see below), whose sum is σ = 2171769589440. Its totient is φ = 2160535178880.

The previous prime is 2166151011701. The next prime is 2166151011781. The reversal of 2166151011727 is 7271101516612.

It is a happy number.

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 2166151011727 - 2¹⁹ = 2166150487439 is a prime.

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 2166151011727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166151011797) 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, 898899 + ... + 2267227.

It is an arithmetic number, because the mean of its divisors is an integer number (271471198680).

Almost surely, 2^{2166151011727} is an apocalyptic number.

2166151011727 is a deficient number, since it is larger than the sum of its proper divisors (5618577713).

2166151011727 is a wasteful number, since it uses less digits than its factorization.

2166151011727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372433.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 2166151011727 in words is "two trillion, one hundred sixty-six billion, one hundred fifty-one million, eleven thousand, seven hundred twenty-seven".