159785178720 has 192 divisors, whose sum is σ = 533397021696. Its totient is φ = 40067850240.

The previous prime is 159785178673. The next prime is 159785178733. The reversal of 159785178720 is 27871587951.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10037007 + ... + 10052913.

It is an arithmetic number, because the mean of its divisors is an integer number (2778109488).

Almost surely, 2^159785178720 is an apocalyptic number.

159785178720 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 159785178720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266698510848).

159785178720 is an abundant number, since it is smaller than the sum of its proper divisors (373611842976).

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

159785178720 is a wasteful number, since it uses less digits than its factorization.

159785178720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17173 (or 17165 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 60.

The spelling of 159785178720 in words is "one hundred fifty-nine billion, seven hundred eighty-five million, one hundred seventy-eight thousand, seven hundred twenty".