2166323162747 has 4 divisors (see below), whose sum is σ = 2166334619976. Its totient is φ = 2166311705520.

The previous prime is 2166323162737. The next prime is 2166323162749. The reversal of 2166323162747 is 7472613236612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2166323162747 - 2⁸ = 2166323162491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2166323162695 and 2166323162704.

It is not an unprimeable number, because it can be changed into a prime (2166323162749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5440154 + ... + 5824767.

It is an arithmetic number, because the mean of its divisors is an integer number (541583654994).

Almost surely, 2^{2166323162747} is an apocalyptic number.

2166323162747 is a deficient number, since it is larger than the sum of its proper divisors (11457229).

2166323162747 is a wasteful number, since it uses less digits than its factorization.

2166323162747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11457228.

The product of its digits is 3048192, while the sum is 50.

The spelling of 2166323162747 in words is "two trillion, one hundred sixty-six billion, three hundred twenty-three million, one hundred sixty-two thousand, seven hundred forty-seven".