12013403532 has 72 divisors (see below), whose sum is σ = 32138978256. Its totient is φ = 3478984704.

The previous prime is 12013403513. The next prime is 12013403609. The reversal of 12013403532 is 23530431021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139753 + ... + 208704.

It is an arithmetic number, because the mean of its divisors is an integer number (446374698).

Almost surely, 2^12013403532 is an apocalyptic number.

12013403532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013403532 is an abundant number, since it is smaller than the sum of its proper divisors (20125574724).

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

12013403532 is a wasteful number, since it uses less digits than its factorization.

12013403532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348507 (or 348492 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 12013403532 its reverse (23530431021), we get a palindrome (35543834553).

The spelling of 12013403532 in words is "twelve billion, thirteen million, four hundred three thousand, five hundred thirty-two".