19983621960036 has 192 divisors, whose sum is σ = 62526228172800. Its totient is φ = 5391817996032.

The previous prime is 19983621960011. The next prime is 19983621960097. The reversal of 19983621960036 is 63006912638991.

19983621960036 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 3 + 6 + 2 + 19 + 600 + 3 + 6 = 666.

It is a super-2 number, since 2×19983621960036² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2273521 + ... + 6718343.

It is an arithmetic number, because the mean of its divisors is an integer number (325657438400).

Almost surely, 2^{19983621960036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19983621960036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31263114086400).

19983621960036 is an abundant number, since it is smaller than the sum of its proper divisors (42542606212764).

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

19983621960036 is a wasteful number, since it uses less digits than its factorization.

19983621960036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445175 (or 4445167 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The spelling of 19983621960036 in words is "nineteen trillion, nine hundred eighty-three billion, six hundred twenty-one million, nine hundred sixty thousand, thirty-six".