159801783936 has 256 divisors, whose sum is σ = 447759436800. Its totient is φ = 50482483200.

The previous prime is 159801783899. The next prime is 159801783937. The reversal of 159801783936 is 639387108951.

It is a super-2 number, since 2×159801783936² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 159801783936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159801783937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697824270 + ... + 697824498.

It is an arithmetic number, because the mean of its divisors is an integer number (1749060300).

Almost surely, 2^159801783936 is an apocalyptic number.

159801783936 is a gapful number since it is divisible by the number (16) 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 159801783936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223879718400).

159801783936 is an abundant number, since it is smaller than the sum of its proper divisors (287957652864).

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

159801783936 is an frugal number, since it uses more digits than its factorization.

159801783936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 159801783936 in words is "one hundred fifty-nine billion, eight hundred one million, seven hundred eighty-three thousand, nine hundred thirty-six".