158221833726 has 64 divisors (see below), whose sum is σ = 360903237120. Its totient is φ = 45861168320.

The previous prime is 158221833719. The next prime is 158221833739. The reversal of 158221833726 is 627338122851.

158221833726 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704506 + ... + 901538.

It is an arithmetic number, because the mean of its divisors is an integer number (5639113080).

Almost surely, 2^158221833726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158221833726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180451618560).

158221833726 is an abundant number, since it is smaller than the sum of its proper divisors (202681403394).

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

158221833726 is a wasteful number, since it uses less digits than its factorization.

158221833726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197118 (or 197072 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 158221833726 in words is "one hundred fifty-eight billion, two hundred twenty-one million, eight hundred thirty-three thousand, seven hundred twenty-six".