11529478572 has 24 divisors (see below), whose sum is σ = 27019599600. Its totient is φ = 3826376256.

The previous prime is 11529478537. The next prime is 11529478577. The reversal of 11529478572 is 27587492511.

It is a happy number.

It is a super-4 number, since 4×11529478572⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (11529478577) by changing a digit.

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, 2095047 + ... + 2100542.

It is an arithmetic number, because the mean of its divisors is an integer number (1125816650).

Almost surely, 2^11529478572 is an apocalyptic number.

11529478572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11529478572 is an abundant number, since it is smaller than the sum of its proper divisors (15490121028).

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

11529478572 is a wasteful number, since it uses less digits than its factorization.

11529478572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195825 (or 4195823 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 51.

The spelling of 11529478572 in words is "eleven billion, five hundred twenty-nine million, four hundred seventy-eight thousand, five hundred seventy-two".