11541212520 has 32 divisors (see below), whose sum is σ = 34623637920. Its totient is φ = 3077656640.

The previous prime is 11541212497. The next prime is 11541212561. The reversal of 11541212520 is 2521214511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48088266 + ... + 48088505.

It is an arithmetic number, because the mean of its divisors is an integer number (1081988685).

Almost surely, 2^11541212520 is an apocalyptic number.

11541212520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11541212520 is an abundant number, since it is smaller than the sum of its proper divisors (23082425400).

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

11541212520 is a wasteful number, since it uses less digits than its factorization.

11541212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96176785 (or 96176781 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 11541212520 in words is "eleven billion, five hundred forty-one million, two hundred twelve thousand, five hundred twenty".