2166716701701 has 24 divisors (see below), whose sum is σ = 3265897527360. Its totient is φ = 1381622960256.

The previous prime is 2166716701697. The next prime is 2166716701703. The reversal of 2166716701701 is 1071076176612.

It is a happy number.

It is not a de Polignac number, because 2166716701701 - 2² = 2166716701697 is a prime.

It is a super-2 number, since 2×2166716701701² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166716701703) 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 23 ways as a sum of consecutive naturals, for example, 5824450 + ... + 6185276.

It is an arithmetic number, because the mean of its divisors is an integer number (136079063640).

Almost surely, 2^{2166716701701} is an apocalyptic number.

It is an amenable number.

2166716701701 is a deficient number, since it is larger than the sum of its proper divisors (1099180825659).

2166716701701 is a wasteful number, since it uses less digits than its factorization.

2166716701701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389865 (or 389862 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The spelling of 2166716701701 in words is "two trillion, one hundred sixty-six billion, seven hundred sixteen million, seven hundred one thousand, seven hundred one".