1666583319039 has 8 divisors (see below), whose sum is σ = 2239073772672. Its totient is φ = 1102574205720.

The previous prime is 1666583319031. The next prime is 1666583319047. The reversal of 1666583319039 is 9309133856661.

It is an interprime number because it is at equal distance from previous prime (1666583319031) and next prime (1666583319047).

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

It is not a de Polignac number, because 1666583319039 - 2³ = 1666583319031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666583319031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120334619 + ... + 2120335404.

It is an arithmetic number, because the mean of its divisors is an integer number (279884221584).

Almost surely, 2^{1666583319039} is an apocalyptic number.

1666583319039 is a deficient number, since it is larger than the sum of its proper divisors (572490453633).

1666583319039 is a wasteful number, since it uses less digits than its factorization.

1666583319039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240670157.

The product of its (nonzero) digits is 18895680, while the sum is 60.

The spelling of 1666583319039 in words is "one trillion, six hundred sixty-six billion, five hundred eighty-three million, three hundred nineteen thousand, thirty-nine".