2166706651017 has 16 divisors (see below), whose sum is σ = 2950932061440. Its totient is φ = 1413487066752.

The previous prime is 2166706650967. The next prime is 2166706651033. The reversal of 2166706651017 is 7101566076612.

It is not a de Polignac number, because 2166706651017 - 2¹⁹ = 2166706126729 is a prime.

It is a super-2 number, since 2×2166706651017² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2166706659017) 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, 562092 + ... + 2156237.

It is an arithmetic number, because the mean of its divisors is an integer number (184433253840).

Almost surely, 2^{2166706651017} is an apocalyptic number.

It is an amenable number.

2166706651017 is a deficient number, since it is larger than the sum of its proper divisors (784225410423).

2166706651017 is a wasteful number, since it uses less digits than its factorization.

2166706651017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724032.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 2166706651017 in words is "two trillion, one hundred sixty-six billion, seven hundred six million, six hundred fifty-one thousand, seventeen".