2166533244434 has 8 divisors (see below), whose sum is σ = 3499784471820. Its totient is φ = 999938420496.

The previous prime is 2166533244341. The next prime is 2166533244437. The reversal of 2166533244434 is 4344423356612.

It can be written as a sum of positive squares in 2 ways, for example, as 2156647913809 + 9885330625 = 1468553^2 + 99425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2166533244437) 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, 41664100829 + ... + 41664100880.

Almost surely, 2^{2166533244434} is an apocalyptic number.

2166533244434 is a deficient number, since it is larger than the sum of its proper divisors (1333251227386).

2166533244434 is a wasteful number, since it uses less digits than its factorization.

2166533244434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83328201724.

The product of its digits is 4976640, while the sum is 47.

The spelling of 2166533244434 in words is "two trillion, one hundred sixty-six billion, five hundred thirty-three million, two hundred forty-four thousand, four hundred thirty-four".