166785036744037 has 4 divisors (see below), whose sum is σ = 166785828384160. Its totient is φ = 166784245103916.

The previous prime is 166785036744017. The next prime is 166785036744047. The reversal of 166785036744037 is 730447630587661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166785036744037 - 2¹⁹ = 166785036219749 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 (166785036744017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395503953 + ... + 395925430.

It is an arithmetic number, because the mean of its divisors is an integer number (41696457096040).

Almost surely, 2^{166785036744037} is an apocalyptic number.

It is an amenable number.

166785036744037 is a deficient number, since it is larger than the sum of its proper divisors (791640123).

166785036744037 is an equidigital number, since it uses as much as digits as its factorization.

166785036744037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791640122.

The product of its (nonzero) digits is 426746880, while the sum is 67.

The spelling of 166785036744037 in words is "one hundred sixty-six trillion, seven hundred eighty-five billion, thirty-six million, seven hundred forty-four thousand, thirty-seven".