166683118457709 has 128 divisors (see below), whose sum is σ = 294287966208000. Its totient is φ = 91225701874944.

The previous prime is 166683118457707. The next prime is 166683118457797. The reversal of 166683118457709 is 907754811386661.

It is not a de Polignac number, because 166683118457709 - 2¹ = 166683118457707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166683118457707) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 6552254212 + ... + 6552279650.

It is an arithmetic number, because the mean of its divisors is an integer number (2299124736000).

Almost surely, 2^{166683118457709} is an apocalyptic number.

It is an amenable number.

166683118457709 is a deficient number, since it is larger than the sum of its proper divisors (127604847750291).

166683118457709 is a wasteful number, since it uses less digits than its factorization.

166683118457709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35024 (or 35018 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 166683118457709 in words is "one hundred sixty-six trillion, six hundred eighty-three billion, one hundred eighteen million, four hundred fifty-seven thousand, seven hundred nine".