166213353016 has 8 divisors (see below), whose sum is σ = 311650036920. Its totient is φ = 83106676504.

The previous prime is 166213352939. The next prime is 166213353041. The reversal of 166213353016 is 610353312661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10388334556 + ... + 10388334571.

It is an arithmetic number, because the mean of its divisors is an integer number (38956254615).

Almost surely, 2^166213353016 is an apocalyptic number.

It is an amenable number.

166213353016 is a deficient number, since it is larger than the sum of its proper divisors (145436683904).

166213353016 is a wasteful number, since it uses less digits than its factorization.

166213353016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20776669133 (or 20776669129 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

Adding to 166213353016 its reverse (610353312661), we get a palindrome (776566665677).

The spelling of 166213353016 in words is "one hundred sixty-six billion, two hundred thirteen million, three hundred fifty-three thousand, sixteen".