11389942368 has 144 divisors (see below), whose sum is σ = 37071530496. Its totient is φ = 3249504000.

The previous prime is 11389942339. The next prime is 11389942379. The reversal of 11389942368 is 86324998311.

11389942368 is a `hidden beast` number, since 113 + 89 + 94 + 2 + 368 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×11389942368² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 1510255 + ... + 1517777.

It is an arithmetic number, because the mean of its divisors is an integer number (257441184).

Almost surely, 2^11389942368 is an apocalyptic number.

11389942368 is a gapful number since it is divisible by the number (18) 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 11389942368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18535765248).

11389942368 is an abundant number, since it is smaller than the sum of its proper divisors (25681588128).

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

11389942368 is a wasteful number, since it uses less digits than its factorization.

11389942368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297 (or 8286 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 11389942368 in words is "eleven billion, three hundred eighty-nine million, nine hundred forty-two thousand, three hundred sixty-eight".