158681513729 has 2 divisors, whose sum is σ = 158681513730. Its totient is φ = 158681513728.

The previous prime is 158681513699. The next prime is 158681513789. The reversal of 158681513729 is 927315186851.

158681513729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118980154225 + 39701359504 = 344935^2 + 199252^2 .

It is an emirp because it is prime and its reverse (927315186851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158681513729 is a prime.

It is not a weakly prime, because it can be changed into another prime (158681513789) 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 as a sum of consecutive naturals, namely, 79340756864 + 79340756865.

It is an arithmetic number, because the mean of its divisors is an integer number (79340756865).

Almost surely, 2^158681513729 is an apocalyptic number.

It is an amenable number.

158681513729 is a deficient number, since it is larger than the sum of its proper divisors (1).

158681513729 is an equidigital number, since it uses as much as digits as its factorization.

158681513729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 56.

The spelling of 158681513729 in words is "one hundred fifty-eight billion, six hundred eighty-one million, five hundred thirteen thousand, seven hundred twenty-nine".