158143686517 has 2 divisors, whose sum is σ = 158143686518. Its totient is φ = 158143686516.

The previous prime is 158143686487. The next prime is 158143686521. The reversal of 158143686517 is 715686341851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151172438481 + 6971248036 = 388809^2 + 83494^2 .

It is a cyclic number.

It is not a de Polignac number, because 158143686517 - 2³⁵ = 123783948149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158143686017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79071843258 + 79071843259.

It is an arithmetic number, because the mean of its divisors is an integer number (79071843259).

Almost surely, 2^158143686517 is an apocalyptic number.

It is an amenable number.

158143686517 is a deficient number, since it is larger than the sum of its proper divisors (1).

158143686517 is an equidigital number, since it uses as much as digits as its factorization.

158143686517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 55.

The spelling of 158143686517 in words is "one hundred fifty-eight billion, one hundred forty-three million, six hundred eighty-six thousand, five hundred seventeen".