158636623643 has 4 divisors (see below), whose sum is σ = 158652792840. Its totient is φ = 158620454448.

The previous prime is 158636623589. The next prime is 158636623681. The reversal of 158636623643 is 346326636851.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158636623643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158636623843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8069873 + ... + 8089506.

It is an arithmetic number, because the mean of its divisors is an integer number (39663198210).

Almost surely, 2^158636623643 is an apocalyptic number.

158636623643 is a deficient number, since it is larger than the sum of its proper divisors (16169197).

158636623643 is an equidigital number, since it uses as much as digits as its factorization.

158636623643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16169196.

The product of its digits is 11197440, while the sum is 53.

The spelling of 158636623643 in words is "one hundred fifty-eight billion, six hundred thirty-six million, six hundred twenty-three thousand, six hundred forty-three".