158440839648 has 192 divisors, whose sum is σ = 512449846272. Its totient is φ = 41740554240.

The previous prime is 158440839631. The next prime is 158440839673. The reversal of 158440839648 is 846938044851.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 158440839591 and 158440839600.

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, 8315893 + ... + 8334923.

It is an arithmetic number, because the mean of its divisors is an integer number (2669009616).

Almost surely, 2^158440839648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158440839648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256224923136).

158440839648 is an abundant number, since it is smaller than the sum of its proper divisors (354009006624).

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

158440839648 is a wasteful number, since it uses less digits than its factorization.

158440839648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20017 (or 20009 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 60.

The spelling of 158440839648 in words is "one hundred fifty-eight billion, four hundred forty million, eight hundred thirty-nine thousand, six hundred forty-eight".