11333553644 has 12 divisors (see below), whose sum is σ = 22667107344. Its totient is φ = 4857237264.

The previous prime is 11333553641. The next prime is 11333553661. The reversal of 11333553644 is 44635533311.

11333553644 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11333553598 and 11333553607.

It is not an unprimeable number, because it can be changed into a prime (11333553641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202384859 + ... + 202384914.

It is an arithmetic number, because the mean of its divisors is an integer number (1888925612).

Almost surely, 2^11333553644 is an apocalyptic number.

11333553644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11333553644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11333553644 is a wasteful number, since it uses less digits than its factorization.

11333553644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404769784 (or 404769782 counting only the distinct ones).

The product of its digits is 194400, while the sum is 38.

The spelling of 11333553644 in words is "eleven billion, three hundred thirty-three million, five hundred fifty-three thousand, six hundred forty-four".