3636381820000 has 60 divisors (see below), whose sum is σ = 8946044783676. Its totient is φ = 1454552720000.

The previous prime is 3636381819911. The next prime is 3636381820003. The reversal of 3636381820000 is 281836363.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3636381820003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 90889546 + ... + 90929545.

Almost surely, 2^{3636381820000} is an apocalyptic number.

It is an amenable number.

3636381820000 is an abundant number, since it is smaller than the sum of its proper divisors (5309662963676).

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

3636381820000 is an equidigital number, since it uses as much as digits as its factorization.

3636381820000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181819121 (or 181819098 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 3636381820000 in words is "three trillion, six hundred thirty-six billion, three hundred eighty-one million, eight hundred twenty thousand".