3636121344 has 72 divisors (see below), whose sum is σ = 9786304080. Its totient is φ = 1198399488.

The previous prime is 3636121337. The next prime is 3636121399. The reversal of 3636121344 is 4431216363.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41754 + ... + 94950.

It is an arithmetic number, because the mean of its divisors is an integer number (135920890).

Almost surely, 2^3636121344 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 3636121344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4893152040).

3636121344 is an abundant number, since it is smaller than the sum of its proper divisors (6150182736).

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

3636121344 is an equidigital number, since it uses as much as digits as its factorization.

3636121344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53305 (or 53291 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 3636121344 is about 60300.2598999374. The cubic root of 3636121344 is about 1537.7277650014.

The spelling of 3636121344 in words is "three billion, six hundred thirty-six million, one hundred twenty-one thousand, three hundred forty-four".