11644236252 has 144 divisors (see below), whose sum is σ = 33414806880. Its totient is φ = 3386611200.

The previous prime is 11644236251. The next prime is 11644236271. The reversal of 11644236252 is 25263244611.

11644236252 is a `hidden beast` number, since 1 + 1 + 6 + 4 + 4 + 23 + 625 + 2 = 666.

It is a super-3 number, since 3×11644236252³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644236251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1983802 + ... + 1989662.

It is an arithmetic number, because the mean of its divisors is an integer number (232047270).

Almost surely, 2^11644236252 is an apocalyptic number.

11644236252 is a gapful number since it is divisible by the number (12) 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 11644236252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16707403440).

11644236252 is an abundant number, since it is smaller than the sum of its proper divisors (21770570628).

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

11644236252 is a wasteful number, since it uses less digits than its factorization.

11644236252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084 (or 6079 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The spelling of 11644236252 in words is "eleven billion, six hundred forty-four million, two hundred thirty-six thousand, two hundred fifty-two".