11526603440 has 80 divisors (see below), whose sum is σ = 29731311360. Its totient is φ = 4120431360.

The previous prime is 11526603379. The next prime is 11526603443. The reversal of 11526603440 is 4430662511.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11526603397 and 11526603406.

It is not an unprimeable number, because it can be changed into a prime (11526603443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59084 + ... + 162923.

It is an arithmetic number, because the mean of its divisors is an integer number (371641392).

Almost surely, 2^11526603440 is an apocalyptic number.

11526603440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11526603440 is an abundant number, since it is smaller than the sum of its proper divisors (18204707920).

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

11526603440 is a wasteful number, since it uses less digits than its factorization.

11526603440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222090 (or 222084 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 11526603440 in words is "eleven billion, five hundred twenty-six million, six hundred three thousand, four hundred forty".