158221615552000 has 2560 divisors, whose sum is σ = 565677514321920. Its totient is φ = 42479124480000.

The previous prime is 158221615551997. The next prime is 158221615552001. The reversal of 158221615552000 is 255516122851.

It is a tau number, because it is divible by the number of its divisors (2560).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158221615552001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 142670527446 + ... + 142670528554.

It is an arithmetic number, because the mean of its divisors is an integer number (220967779032).

Almost surely, 2^{158221615552000} is an apocalyptic number.

158221615552000 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 158221615552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282838757160960).

158221615552000 is an abundant number, since it is smaller than the sum of its proper divisors (407455898769920).

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

158221615552000 is a wasteful number, since it uses less digits than its factorization.

158221615552000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 43.

The spelling of 158221615552000 in words is "one hundred fifty-eight trillion, two hundred twenty-one billion, six hundred fifteen million, five hundred fifty-two thousand".