166616150501065 has 8 divisors (see below), whose sum is σ = 199939582195848. Its totient is φ = 133292786004480.

The previous prime is 166616150501027. The next prime is 166616150501077. The reversal of 166616150501065 is 560105051616661.

It can be written as a sum of positive squares in 4 ways, for example, as 34059981504649 + 132556168996416 = 5836093^2 + 11513304^2 .

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

It is not a de Polignac number, because 166616150501065 - 2⁴¹ = 164417127245513 is a prime.

It is a super-2 number, since 2×166616150501065² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11173416 + ... + 21402745.

It is an arithmetic number, because the mean of its divisors is an integer number (24992447774481).

Almost surely, 2^{166616150501065} is an apocalyptic number.

It is an amenable number.

166616150501065 is a deficient number, since it is larger than the sum of its proper divisors (33323431694783).

166616150501065 is a wasteful number, since it uses less digits than its factorization.

166616150501065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33599099.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 166616150501065 in words is "one hundred sixty-six trillion, six hundred sixteen billion, one hundred fifty million, five hundred one thousand, sixty-five".