2166523012336 has 20 divisors (see below), whose sum is σ = 4197664269792. Its totient is φ = 1083254813696.

The previous prime is 2166523012327. The next prime is 2166523012393. The reversal of 2166523012336 is 6332103256612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201936 + ... + 3819088.

Almost surely, 2^{2166523012336} is an apocalyptic number.

It is an amenable number.

2166523012336 is a deficient number, since it is larger than the sum of its proper divisors (2031141257456).

2166523012336 is a wasteful number, since it uses less digits than its factorization.

2166523012336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836568 (or 836562 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 2166523012336 its reverse (6332103256612), we get a palindrome (8498626268948).

The spelling of 2166523012336 in words is "two trillion, one hundred sixty-six billion, five hundred twenty-three million, twelve thousand, three hundred thirty-six".