166634360613 has 18 divisors (see below), whose sum is σ = 279991069254. Its totient is φ = 95219634384.

The previous prime is 166634360609. The next prime is 166634360639. The reversal of 166634360613 is 316063436661.

166634360613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 164234046564 + 2400314049 = 405258^2 + 48993^2 .

It is not a de Polignac number, because 166634360613 - 2² = 166634360609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166634350613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 188927406 + ... + 188928287.

It is an arithmetic number, because the mean of its divisors is an integer number (15555059403).

Almost surely, 2^166634360613 is an apocalyptic number.

It is an amenable number.

166634360613 is a deficient number, since it is larger than the sum of its proper divisors (113356708641).

166634360613 is a wasteful number, since it uses less digits than its factorization.

166634360613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377855713 (or 377855703 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The spelling of 166634360613 in words is "one hundred sixty-six billion, six hundred thirty-four million, three hundred sixty thousand, six hundred thirteen".