158536530448221 has 16 divisors (see below), whose sum is σ = 212123501352000. Its totient is φ = 105320358019200.

The previous prime is 158536530448201. The next prime is 158536530448259. The reversal of 158536530448221 is 122844035635851.

It is not a de Polignac number, because 158536530448221 - 2³³ = 158527940513629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158536530448201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811530 + ... + 17825028.

It is an arithmetic number, because the mean of its divisors is an integer number (13257718834500).

Almost surely, 2^{158536530448221} is an apocalyptic number.

It is an amenable number.

158536530448221 is a deficient number, since it is larger than the sum of its proper divisors (53586970903779).

158536530448221 is a wasteful number, since it uses less digits than its factorization.

158536530448221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17024396.

The product of its (nonzero) digits is 27648000, while the sum is 57.

The spelling of 158536530448221 in words is "one hundred fifty-eight trillion, five hundred thirty-six billion, five hundred thirty million, four hundred forty-eight thousand, two hundred twenty-one".