166339709239 has 8 divisors (see below), whose sum is σ = 185887391760. Its totient is φ = 147529675200.

The previous prime is 166339709227. The next prime is 166339709251. The reversal of 166339709239 is 932907933661.

It is an interprime number because it is at equal distance from previous prime (166339709227) and next prime (166339709251).

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 166339709239 - 2¹⁹ = 166339184951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166339703239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184411644 + ... + 184412545.

It is an arithmetic number, because the mean of its divisors is an integer number (23235923970).

Almost surely, 2^166339709239 is an apocalyptic number.

166339709239 is a deficient number, since it is larger than the sum of its proper divisors (19547682521).

166339709239 is a wasteful number, since it uses less digits than its factorization.

166339709239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368824241.

The product of its (nonzero) digits is 9920232, while the sum is 58.

It can be divided in two parts, 166339 and 709239, that added together give a palindrome (875578).

The spelling of 166339709239 in words is "one hundred sixty-six billion, three hundred thirty-nine million, seven hundred nine thousand, two hundred thirty-nine".