166070855465 has 4 divisors (see below), whose sum is σ = 199285026564. Its totient is φ = 132856684368.

The previous prime is 166070855459. The next prime is 166070855473. The reversal of 166070855465 is 564558070661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564558070661 = 13 ⋅43427543897.

It can be written as a sum of positive squares in 2 ways, for example, as 40454483689 + 125616371776 = 201133^2 + 354424^2 .

It is a cyclic number.

It is not a de Polignac number, because 166070855465 - 2⁴ = 166070855449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16607085542 + ... + 16607085551.

It is an arithmetic number, because the mean of its divisors is an integer number (49821256641).

Almost surely, 2^166070855465 is an apocalyptic number.

It is an amenable number.

166070855465 is a deficient number, since it is larger than the sum of its proper divisors (33214171099).

166070855465 is an equidigital number, since it uses as much as digits as its factorization.

166070855465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33214171098.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 166070855465 in words is "one hundred sixty-six billion, seventy million, eight hundred fifty-five thousand, four hundred sixty-five".