3621720523608 has 48 divisors (see below), whose sum is σ = 10700537913000. Its totient is φ = 1097491067520.

The previous prime is 3621720523571. The next prime is 3621720523657. The reversal of 3621720523608 is 8063250271263.

3621720523608 is a `hidden beast` number, since 3 + 6 + 2 + 17 + 2 + 0 + 5 + 23 + 608 = 666.

It is a super-2 number, since 2×3621720523608² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2286438933 + ... + 2286440516.

Almost surely, 2^{3621720523608} is an apocalyptic number.

It is an amenable number.

3621720523608 is an abundant number, since it is smaller than the sum of its proper divisors (7078817389392).

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

3621720523608 is a wasteful number, since it uses less digits than its factorization.

3621720523608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572879472 (or 4572879465 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 3621720523608 in words is "three trillion, six hundred twenty-one billion, seven hundred twenty million, five hundred twenty-three thousand, six hundred eight".