166612244768 has 54 divisors (see below), whose sum is σ = 333944766099. Its totient is φ = 81827192512.

The previous prime is 166612244761. The next prime is 166612244819. The reversal of 166612244768 is 867442216661.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 83306122384 + 83306122384 = 288628^2 + 288628^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=288628.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166612244761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 136231805 + ... + 136233027.

Almost surely, 2^166612244768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166612244768

166612244768 is an abundant number, since it is smaller than the sum of its proper divisors (167332521331).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166612244768 is an frugal number, since it uses more digits than its factorization.

166612244768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 1284 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The spelling of 166612244768 in words is "one hundred sixty-six billion, six hundred twelve million, two hundred forty-four thousand, seven hundred sixty-eight".