20159481600000 has 864 divisors, whose sum is σ = 75944848281120. Its totient is φ = 5141790720000.

The previous prime is 20159481599963. The next prime is 20159481600007. The reversal of 20159481600000 is 618495102.

20159481600000 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 9 + 48 + 1 + 600 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159481600007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1324792392 + ... + 1324807608.

It is an arithmetic number, because the mean of its divisors is an integer number (87899129955).

Almost surely, 2^{20159481600000} is an apocalyptic number.

20159481600000 is a gapful number since it is divisible by the number (20) 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 20159481600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37972424140560).

20159481600000 is an abundant number, since it is smaller than the sum of its proper divisors (55785366681120).

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

20159481600000 is an equidigital number, since it uses as much as digits as its factorization.

20159481600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15293 (or 15250 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 20159481600000 in words is "twenty trillion, one hundred fifty-nine billion, four hundred eighty-one million, six hundred thousand".