158643752237 has 2 divisors, whose sum is σ = 158643752238. Its totient is φ = 158643752236.

The previous prime is 158643752231. The next prime is 158643752261. The reversal of 158643752237 is 732257346851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158635720681 + 8031556 = 398291^2 + 2834^2 .

It is an emirp because it is prime and its reverse (732257346851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158643752237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158643752231) 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, 79321876118 + 79321876119.

It is an arithmetic number, because the mean of its divisors is an integer number (79321876119).

Almost surely, 2^158643752237 is an apocalyptic number.

It is an amenable number.

158643752237 is a deficient number, since it is larger than the sum of its proper divisors (1).

158643752237 is an equidigital number, since it uses as much as digits as its factorization.

158643752237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 53.

The spelling of 158643752237 in words is "one hundred fifty-eight billion, six hundred forty-three million, seven hundred fifty-two thousand, two hundred thirty-seven".