11643378252 has 48 divisors (see below), whose sum is σ = 29644175232. Its totient is φ = 3527524480.

The previous prime is 11643378247. The next prime is 11643378269. The reversal of 11643378252 is 25287334611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975223 + ... + 987089.

It is an arithmetic number, because the mean of its divisors is an integer number (617586984).

Almost surely, 2^11643378252 is an apocalyptic number.

11643378252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11643378252 is an abundant number, since it is smaller than the sum of its proper divisors (18000796980).

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

11643378252 is a wasteful number, since it uses less digits than its factorization.

11643378252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19318 (or 19316 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 11643378252 in words is "eleven billion, six hundred forty-three million, three hundred seventy-eight thousand, two hundred fifty-two".