159957186320 has 160 divisors (see below), whose sum is σ = 394184532480. Its totient is φ = 60197437440.

The previous prime is 159957186299. The next prime is 159957186343. The reversal of 159957186320 is 23681759951.

It is a happy number.

It is a super-2 number, since 2×159957186320² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237677504 + ... + 237678176.

It is an arithmetic number, because the mean of its divisors is an integer number (2463653328).

Almost surely, 2^159957186320 is an apocalyptic number.

159957186320 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 159957186320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197092266240).

159957186320 is an abundant number, since it is smaller than the sum of its proper divisors (234227346160).

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

159957186320 is a wasteful number, since it uses less digits than its factorization.

159957186320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 56.

The spelling of 159957186320 in words is "one hundred fifty-nine billion, nine hundred fifty-seven million, one hundred eighty-six thousand, three hundred twenty".