158887535857 has 2 divisors, whose sum is σ = 158887535858. Its totient is φ = 158887535856.

The previous prime is 158887535827. The next prime is 158887535909. The reversal of 158887535857 is 758535788851.

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., 105193840896 + 53693694961 = 324336^2 + 231719^2 .

It is an emirp because it is prime and its reverse (758535788851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158887535857 - 2²³ = 158879147249 is a prime.

It is not a weakly prime, because it can be changed into another prime (158887535827) 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, 79443767928 + 79443767929.

It is an arithmetic number, because the mean of its divisors is an integer number (79443767929).

Almost surely, 2^158887535857 is an apocalyptic number.

It is an amenable number.

158887535857 is a deficient number, since it is larger than the sum of its proper divisors (1).

158887535857 is an equidigital number, since it uses as much as digits as its factorization.

158887535857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320000, while the sum is 70.

The spelling of 158887535857 in words is "one hundred fifty-eight billion, eight hundred eighty-seven million, five hundred thirty-five thousand, eight hundred fifty-seven".