158394537755639 has 2 divisors, whose sum is σ = 158394537755640. Its totient is φ = 158394537755638.

The previous prime is 158394537755621. The next prime is 158394537755719. The reversal of 158394537755639 is 936557735493851.

It is an a-pointer prime, because the next prime (158394537755719) can be obtained adding 158394537755639 to its sum of digits (80).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158394537755639 - 2²⁰ = 158394536707063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158394537755239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79197268877819 + 79197268877820.

It is an arithmetic number, because the mean of its divisors is an integer number (79197268877820).

Almost surely, 2^{158394537755639} is an apocalyptic number.

158394537755639 is a deficient number, since it is larger than the sum of its proper divisors (1).

158394537755639 is an equidigital number, since it uses as much as digits as its factorization.

158394537755639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12859560000, while the sum is 80.

The spelling of 158394537755639 in words is "one hundred fifty-eight trillion, three hundred ninety-four billion, five hundred thirty-seven million, seven hundred fifty-five thousand, six hundred thirty-nine".