159997798400 has 432 divisors, whose sum is σ = 460182733920. Its totient is φ = 54702899200.

The previous prime is 159997798379. The next prime is 159997798403. The reversal of 159997798400 is 4897799951.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is not an unprimeable number, because it can be changed into a prime (159997798403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 162764309 + ... + 162765291.

It is an arithmetic number, because the mean of its divisors is an integer number (1065237810).

Almost surely, 2^159997798400 is an apocalyptic number.

159997798400 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 159997798400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230091366960).

159997798400 is an abundant number, since it is smaller than the sum of its proper divisors (300184935520).

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

159997798400 is a wasteful number, since it uses less digits than its factorization.

159997798400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 68.

The spelling of 159997798400 in words is "one hundred fifty-nine billion, nine hundred ninety-seven million, seven hundred ninety-eight thousand, four hundred".