3651682981824 has 168 divisors, whose sum is σ = 10849141225728. Its totient is φ = 1173547584000.

The previous prime is 3651682981813. The next prime is 3651682981829. The reversal of 3651682981824 is 4281892861563.

3651682981824 is a `hidden beast` number, since 3 + 6 + 5 + 168 + 298 + 182 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651682981829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807199 + ... + 2820449.

Almost surely, 2^{3651682981824} 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 3651682981824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5424570612864).

3651682981824 is an abundant number, since it is smaller than the sum of its proper divisors (7197458243904).

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

3651682981824 is a wasteful number, since it uses less digits than its factorization.

3651682981824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013383 (or 2013370 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 63.

The spelling of 3651682981824 in words is "three trillion, six hundred fifty-one billion, six hundred eighty-two million, nine hundred eighty-one thousand, eight hundred twenty-four".