11503055140 has 24 divisors (see below), whose sum is σ = 24158615040. Its totient is φ = 4600803168.

The previous prime is 11503055129. The next prime is 11503055149. The reversal of 11503055140 is 4155030511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11503055149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295239 + ... + 331921.

It is an arithmetic number, because the mean of its divisors is an integer number (1006608960).

Almost surely, 2^11503055140 is an apocalyptic number.

11503055140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11503055140 is an abundant number, since it is smaller than the sum of its proper divisors (12655559900).

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

11503055140 is a wasteful number, since it uses less digits than its factorization.

11503055140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52371 (or 52369 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 11503055140 its reverse (4155030511), we get a palindrome (15658085651).

The spelling of 11503055140 in words is "eleven billion, five hundred three million, fifty-five thousand, one hundred forty".