2166622044431 has 8 divisors (see below), whose sum is σ = 2371535857824. Its totient is φ = 1967172599520.

The previous prime is 2166622044347. The next prime is 2166622044689. The reversal of 2166622044431 is 1344402266612.

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 2166622044431 - 2¹⁸ = 2166621782287 is a prime.

It is a super-2 number, since 2×2166622044431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166622040431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366091291 + ... + 1366092876.

It is an arithmetic number, because the mean of its divisors is an integer number (296441982228).

Almost surely, 2^{2166622044431} is an apocalyptic number.

2166622044431 is a deficient number, since it is larger than the sum of its proper divisors (204913813393).

2166622044431 is a wasteful number, since it uses less digits than its factorization.

2166622044431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732184241.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 2166622044431 in words is "two trillion, one hundred sixty-six billion, six hundred twenty-two million, forty-four thousand, four hundred thirty-one".