158869651967849 has 2 divisors, whose sum is σ = 158869651967850. Its totient is φ = 158869651967848.

The previous prime is 158869651967837. The next prime is 158869651967861. The reversal of 158869651967849 is 948769156968851.

It is a balanced prime because it is at equal distance from previous prime (158869651967837) and next prime (158869651967861).

It can be written as a sum of positive squares in only one way, i.e., 106587453774400 + 52282198193449 = 10324120^2 + 7230643^2 .

It is an emirp because it is prime and its reverse (948769156968851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158869651967849 is a prime.

It is not a weakly prime, because it can be changed into another prime (158869651967149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79434825983924 + 79434825983925.

It is an arithmetic number, because the mean of its divisors is an integer number (79434825983925).

Almost surely, 2^{158869651967849} is an apocalyptic number.

It is an amenable number.

158869651967849 is a deficient number, since it is larger than the sum of its proper divisors (1).

158869651967849 is an equidigital number, since it uses as much as digits as its factorization.

158869651967849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56435097600, while the sum is 92.

The spelling of 158869651967849 in words is "one hundred fifty-eight trillion, eight hundred sixty-nine billion, six hundred fifty-one million, nine hundred sixty-seven thousand, eight hundred forty-nine".