159978788465320 has 128 divisors (see below), whose sum is σ = 406606734144000. Its totient is φ = 56114036858880.

The previous prime is 159978788465297. The next prime is 159978788465357. The reversal of 159978788465320 is 23564887879951.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7224184 + ... + 19291096.

It is an arithmetic number, because the mean of its divisors is an integer number (3176615110500).

It is a 1-persistent number, because it is pandigital, but 2⋅159978788465320 = 319957576930640 is not.

Almost surely, 2^{159978788465320} is an apocalyptic number.

159978788465320 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 159978788465320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203303367072000).

159978788465320 is an abundant number, since it is smaller than the sum of its proper divisors (246627945678680).

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

159978788465320 is a wasteful number, since it uses less digits than its factorization.

159978788465320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068003 (or 12067999 counting only the distinct ones).

The product of its (nonzero) digits is 7315660800, while the sum is 82.

The spelling of 159978788465320 in words is "one hundred fifty-nine trillion, nine hundred seventy-eight billion, seven hundred eighty-eight million, four hundred sixty-five thousand, three hundred twenty".