11503540452 has 12 divisors (see below), whose sum is σ = 26841594416. Its totient is φ = 3834513480.

The previous prime is 11503540441. The next prime is 11503540547. The reversal of 11503540452 is 25404530511.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479314174 + ... + 479314197.

Almost surely, 2^11503540452 is an apocalyptic number.

11503540452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11503540452 is an abundant number, since it is smaller than the sum of its proper divisors (15338053964).

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

11503540452 is a wasteful number, since it uses less digits than its factorization.

11503540452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958628378 (or 958628376 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 11503540452 in words is "eleven billion, five hundred three million, five hundred forty thousand, four hundred fifty-two".