158942791289 has 32 divisors (see below), whose sum is σ = 169582608384. Its totient is φ = 148652159040.

The previous prime is 158942791253. The next prime is 158942791291. The reversal of 158942791289 is 982197249851.

It is a cyclic number.

It is not a de Polignac number, because 158942791289 - 2¹² = 158942787193 is a prime.

It is a super-2 number, since 2×158942791289² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158942791489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216838367 + ... + 216839099.

It is an arithmetic number, because the mean of its divisors is an integer number (5299456512).

Almost surely, 2^158942791289 is an apocalyptic number.

It is an amenable number.

158942791289 is a deficient number, since it is larger than the sum of its proper divisors (10639817095).

158942791289 is a wasteful number, since it uses less digits than its factorization.

158942791289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677.

The product of its digits is 26127360, while the sum is 65.

The spelling of 158942791289 in words is "one hundred fifty-eight billion, nine hundred forty-two million, seven hundred ninety-one thousand, two hundred eighty-nine".