11389711968 has 120 divisors (see below), whose sum is σ = 33529917960. Its totient is φ = 3792821760.

The previous prime is 11389711939. The next prime is 11389711999. The reversal of 11389711968 is 86911798311.

11389711968 is a `hidden beast` number, since 1 + 1 + 389 + 71 + 196 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4169163 + ... + 4171893.

It is an arithmetic number, because the mean of its divisors is an integer number (279415983).

Almost surely, 2^11389711968 is an apocalyptic number.

11389711968 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 11389711968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16764958980).

11389711968 is an abundant number, since it is smaller than the sum of its proper divisors (22140205992).

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

11389711968 is a wasteful number, since it uses less digits than its factorization.

11389711968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362 (or 4345 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The spelling of 11389711968 in words is "eleven billion, three hundred eighty-nine million, seven hundred eleven thousand, nine hundred sixty-eight".