158645329920 has 1792 divisors, whose sum is σ = 742849781760. Its totient is φ = 31531991040.

The previous prime is 158645329901. The next prime is 158645329993. The reversal of 158645329920 is 29923546851.

158645329920 is a `hidden beast` number, since 1 + 5 + 86 + 4 + 532 + 9 + 9 + 20 = 666.

158645329920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1792).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6897623029 + ... + 6897623051.

Almost surely, 2^158645329920 is an apocalyptic number.

158645329920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158645329920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371424890880).

158645329920 is an abundant number, since it is smaller than the sum of its proper divisors (584204451840).

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

158645329920 is an frugal number, since it uses more digits than its factorization.

158645329920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 158645329920 in words is "one hundred fifty-eight billion, six hundred forty-five million, three hundred twenty-nine thousand, nine hundred twenty".