166630738739 has 8 divisors (see below), whose sum is σ = 175415869440. Its totient is φ = 157847117256.

The previous prime is 166630738711. The next prime is 166630738763. The reversal of 166630738739 is 937837036661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166630738739 - 2²⁴ = 166613961523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166630738709) 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 7 ways as a sum of consecutive naturals, for example, 147059 + ... + 595724.

It is an arithmetic number, because the mean of its divisors is an integer number (21926983680).

Almost surely, 2^166630738739 is an apocalyptic number.

166630738739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

166630738739 is a deficient number, since it is larger than the sum of its proper divisors (8785130701).

166630738739 is a wasteful number, since it uses less digits than its factorization.

166630738739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754609.

The product of its (nonzero) digits is 20575296, while the sum is 59.

The spelling of 166630738739 in words is "one hundred sixty-six billion, six hundred thirty million, seven hundred thirty-eight thousand, seven hundred thirty-nine".