166500180019 has 8 divisors (see below), whose sum is σ = 172299772800. Its totient is φ = 160727376000.

The previous prime is 166500180001. The next prime is 166500180031. The reversal of 166500180019 is 910081005661.

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 166500180019 - 2¹¹ = 166500177971 is a prime.

It is a super-2 number, since 2×166500180019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166500180019.

It is not an unprimeable number, because it can be changed into a prime (166500180059) 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, 6684544 + ... + 6709405.

It is an arithmetic number, because the mean of its divisors is an integer number (21537471600).

Almost surely, 2^166500180019 is an apocalyptic number.

166500180019 is a deficient number, since it is larger than the sum of its proper divisors (5799592781).

166500180019 is a wasteful number, since it uses less digits than its factorization.

166500180019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13394381.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 166500180019 in words is "one hundred sixty-six billion, five hundred million, one hundred eighty thousand, nineteen".