158664972646 has 8 divisors (see below), whose sum is σ = 250523641080. Its totient is φ = 75157092288.

The previous prime is 158664972601. The next prime is 158664972673. The reversal of 158664972646 is 646279466851.

158664972646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2087696971 + ... + 2087697046.

It is an arithmetic number, because the mean of its divisors is an integer number (31315455135).

Almost surely, 2^158664972646 is an apocalyptic number.

158664972646 is a deficient number, since it is larger than the sum of its proper divisors (91858668434).

158664972646 is a wasteful number, since it uses less digits than its factorization.

158664972646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175394038.

The product of its digits is 104509440, while the sum is 64.

The spelling of 158664972646 in words is "one hundred fifty-eight billion, six hundred sixty-four million, nine hundred seventy-two thousand, six hundred forty-six".