158681513789 has 2 divisors, whose sum is σ = 158681513790. Its totient is φ = 158681513788.

The previous prime is 158681513729. The next prime is 158681513827. The reversal of 158681513789 is 987315186851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93779875225 + 64901638564 = 306235^2 + 254758^2 .

It is a cyclic number.

It is not a de Polignac number, because 158681513789 - 2²⁰ = 158680465213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158681513729) 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 as a sum of consecutive naturals, namely, 79340756894 + 79340756895.

It is an arithmetic number, because the mean of its divisors is an integer number (79340756895).

Almost surely, 2^158681513789 is an apocalyptic number.

It is an amenable number.

158681513789 is a deficient number, since it is larger than the sum of its proper divisors (1).

158681513789 is an equidigital number, since it uses as much as digits as its factorization.

158681513789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 62.

The spelling of 158681513789 in words is "one hundred fifty-eight billion, six hundred eighty-one million, five hundred thirteen thousand, seven hundred eighty-nine".