11389499520 has 512 divisors, whose sum is σ = 44557516800. Its totient is φ = 2415329280.

The previous prime is 11389499497. The next prime is 11389499617. The reversal of 11389499520 is 2599498311.

11389499520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18049605 + ... + 18050235.

It is an arithmetic number, because the mean of its divisors is an integer number (87026400).

Almost surely, 2^11389499520 is an apocalyptic number.

11389499520 is a gapful number since it is divisible by the number (10) 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 11389499520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22278758400).

11389499520 is an abundant number, since it is smaller than the sum of its proper divisors (33168017280).

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

11389499520 is a wasteful number, since it uses less digits than its factorization.

11389499520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 11389499520 in words is "eleven billion, three hundred eighty-nine million, four hundred ninety-nine thousand, five hundred twenty".