158695135979 has 2 divisors, whose sum is σ = 158695135980. Its totient is φ = 158695135978.

The previous prime is 158695135957. The next prime is 158695135981. The reversal of 158695135979 is 979531596851.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (979531596851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158695135979 is a prime.

Together with 158695135981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158695135909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79347567989 + 79347567990.

It is an arithmetic number, because the mean of its divisors is an integer number (79347567990).

Almost surely, 2^158695135979 is an apocalyptic number.

158695135979 is a deficient number, since it is larger than the sum of its proper divisors (1).

158695135979 is an equidigital number, since it uses as much as digits as its factorization.

158695135979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854000, while the sum is 68.

The spelling of 158695135979 in words is "one hundred fifty-eight billion, six hundred ninety-five million, one hundred thirty-five thousand, nine hundred seventy-nine".