11155525240 has 32 divisors (see below), whose sum is σ = 25106122080. Its totient is φ = 4461109632.

The previous prime is 11155525237. The next prime is 11155525267. The reversal of 11155525240 is 4252555111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140854 + ... + 205306.

It is an arithmetic number, because the mean of its divisors is an integer number (784566315).

Almost surely, 2^11155525240 is an apocalyptic number.

11155525240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11155525240 is an abundant number, since it is smaller than the sum of its proper divisors (13950596840).

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

11155525240 is a wasteful number, since it uses less digits than its factorization.

11155525240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68791 (or 68787 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 11155525240 in words is "eleven billion, one hundred fifty-five million, five hundred twenty-five thousand, two hundred forty".