3618363961836 has 144 divisors (see below), whose sum is σ = 10170213580800. Its totient is φ = 1112011063488.

The previous prime is 3618363961799. The next prime is 3618363961843. The reversal of 3618363961836 is 6381693638163.

It is a happy number.

3618363961836 is a `hidden beast` number, since 3 + 6 + 1 + 8 + 3 + 6 + 3 + 9 + 618 + 3 + 6 = 666.

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 47 ways as a sum of consecutive naturals, for example, 15195285 + ... + 15431571.

It is an arithmetic number, because the mean of its divisors is an integer number (70626483200).

Almost surely, 2^{3618363961836} is an apocalyptic number.

3618363961836 is a gapful number since it is divisible by the number (36) 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 3618363961836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5085106790400).

3618363961836 is an abundant number, since it is smaller than the sum of its proper divisors (6551849618964).

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

3618363961836 is a wasteful number, since it uses less digits than its factorization.

3618363961836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237165 (or 237144 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 63.

The spelling of 3618363961836 in words is "three trillion, six hundred eighteen billion, three hundred sixty-three million, nine hundred sixty-one thousand, eight hundred thirty-six".