158538312216740 has 24 divisors (see below), whose sum is σ = 347405692858560. Its totient is φ = 60658136847968.

The previous prime is 158538312216721. The next prime is 158538312216743. The reversal of 158538312216740 is 47612213835851.

It is not an unprimeable number, because it can be changed into a prime (158538312216743) 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 7 ways as a sum of consecutive naturals, for example, 172324251950 + ... + 172324252869.

It is an arithmetic number, because the mean of its divisors is an integer number (14475237202440).

Almost surely, 2^{158538312216740} is an apocalyptic number.

158538312216740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158538312216740 is an abundant number, since it is smaller than the sum of its proper divisors (188867380641820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158538312216740 is a wasteful number, since it uses less digits than its factorization.

158538312216740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344648504851 (or 344648504849 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 158538312216740 in words is "one hundred fifty-eight trillion, five hundred thirty-eight billion, three hundred twelve million, two hundred sixteen thousand, seven hundred forty".