11512555240 has 64 divisors (see below), whose sum is σ = 28452124800. Its totient is φ = 4172965632.

The previous prime is 11512555151. The next prime is 11512555267. The reversal of 11512555240 is 4255521511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311827 + ... + 346786.

It is an arithmetic number, because the mean of its divisors is an integer number (444564450).

Almost surely, 2^11512555240 is an apocalyptic number.

11512555240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512555240 is an abundant number, since it is smaller than the sum of its proper divisors (16939569560).

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

11512555240 is a wasteful number, since it uses less digits than its factorization.

11512555240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658666 (or 658662 counting only the distinct ones).

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

The spelling of 11512555240 in words is "eleven billion, five hundred twelve million, five hundred fifty-five thousand, two hundred forty".