149571168817 has 12 divisors (see below), whose sum is σ = 174324936996. Its totient is φ = 127957764480.

The previous prime is 149571168811. The next prime is 149571168827. The reversal of 149571168817 is 718861175941.

It can be written as a sum of positive squares in 2 ways, for example, as 80086736016 + 69484432801 = 282996^2 + 263599^2 .

It is a de Polignac number, because none of the positive numbers 2^k-149571168817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149571168811) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2903908 + ... + 2954965.

It is an arithmetic number, because the mean of its divisors is an integer number (14527078083).

Almost surely, 2^149571168817 is an apocalyptic number.

It is an amenable number.

149571168817 is a deficient number, since it is larger than the sum of its proper divisors (24753768179).

149571168817 is an equidigital number, since it uses as much as digits as its factorization.

149571168817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859408 (or 5859401 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 58.

The spelling of 149571168817 in words is "one hundred forty-nine billion, five hundred seventy-one million, one hundred sixty-eight thousand, eight hundred seventeen".