1630666717171 has 4 divisors (see below), whose sum is σ = 1686896604000. Its totient is φ = 1574436830344.

The previous prime is 1630666717153. The next prime is 1630666717247. The reversal of 1630666717171 is 1717176660361.

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

It is a cyclic number.

It is not a de Polignac number, because 1630666717171 - 2⁹ = 1630666716659 is a prime.

It is a super-2 number, since 2×1630666717171² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630666717151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28114943371 + ... + 28114943428.

It is an arithmetic number, because the mean of its divisors is an integer number (421724151000).

Almost surely, 2^{1630666717171} is an apocalyptic number.

1630666717171 is a deficient number, since it is larger than the sum of its proper divisors (56229886829).

1630666717171 is an equidigital number, since it uses as much as digits as its factorization.

1630666717171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56229886828.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 1630666717171 in words is "one trillion, six hundred thirty billion, six hundred sixty-six million, seven hundred seventeen thousand, one hundred seventy-one".