158786772727309 has 2 divisors, whose sum is σ = 158786772727310. Its totient is φ = 158786772727308.

The previous prime is 158786772727307. The next prime is 158786772727399. The reversal of 158786772727309 is 903727277687851.

158786772727309 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., 91468604022084 + 67318168705225 = 9563922^2 + 8204765^2 .

It is a cyclic number.

It is not a de Polignac number, because 158786772727309 - 2¹ = 158786772727307 is a prime.

Together with 158786772727307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158786772727307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79393386363654 + 79393386363655.

It is an arithmetic number, because the mean of its divisors is an integer number (79393386363655).

Almost surely, 2^{158786772727309} is an apocalyptic number.

It is an amenable number.

158786772727309 is a deficient number, since it is larger than the sum of its proper divisors (1).

158786772727309 is an equidigital number, since it uses as much as digits as its factorization.

158786772727309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3485099520, while the sum is 79.

The spelling of 158786772727309 in words is "one hundred fifty-eight trillion, seven hundred eighty-six billion, seven hundred seventy-two million, seven hundred twenty-seven thousand, three hundred nine".