158367685081 has 2 divisors, whose sum is σ = 158367685082. Its totient is φ = 158367685080.

The previous prime is 158367685079. The next prime is 158367685129. The reversal of 158367685081 is 180586763851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82335137481 + 76032547600 = 286941^2 + 275740^2 .

It is a cyclic number.

It is not a de Polignac number, because 158367685081 - 2¹ = 158367685079 is a prime.

It is a super-2 number, since 2×158367685081² (a number of 23 digits) contains 22 as substring.

Together with 158367685079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (158367685181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79183842540 + 79183842541.

It is an arithmetic number, because the mean of its divisors is an integer number (79183842541).

Almost surely, 2^158367685081 is an apocalyptic number.

It is an amenable number.

158367685081 is a deficient number, since it is larger than the sum of its proper divisors (1).

158367685081 is an equidigital number, since it uses as much as digits as its factorization.

158367685081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 158367685081 in words is "one hundred fifty-eight billion, three hundred sixty-seven million, six hundred eighty-five thousand, eighty-one".