166442466353155 has 4 divisors (see below), whose sum is σ = 199730959623792. Its totient is φ = 133153973082520.

The previous prime is 166442466353143. The next prime is 166442466353213. The reversal of 166442466353155 is 551353664244661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 166442466353155 - 2¹³ = 166442466344963 is a prime.

It is a super-2 number, since 2×166442466353155² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166442466353093 and 166442466353102.

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, 16644246635311 + ... + 16644246635320.

It is an arithmetic number, because the mean of its divisors is an integer number (49932739905948).

Almost surely, 2^{166442466353155} is an apocalyptic number.

166442466353155 is a deficient number, since it is larger than the sum of its proper divisors (33288493270637).

166442466353155 is an equidigital number, since it uses as much as digits as its factorization.

166442466353155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33288493270636.

The product of its digits is 186624000, while the sum is 61.

The spelling of 166442466353155 in words is "one hundred sixty-six trillion, four hundred forty-two billion, four hundred sixty-six million, three hundred fifty-three thousand, one hundred fifty-five".