12013423532 has 72 divisors (see below), whose sum is σ = 24002818560. Its totient is φ = 5253292000.

The previous prime is 12013423529. The next prime is 12013423547. The reversal of 12013423532 is 23532431021.

It is a happy number.

It is a super-2 number, since 2×12013423532² (a number of 21 digits) contains 22 as substring.

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, 1337657 + ... + 1346607.

It is an arithmetic number, because the mean of its divisors is an integer number (333372480).

Almost surely, 2^12013423532 is an apocalyptic number.

It is an amenable number.

12013423532 is a deficient number, since it is larger than the sum of its proper divisors (11989395028).

12013423532 is a wasteful number, since it uses less digits than its factorization.

12013423532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9083 (or 9070 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 12013423532 its reverse (23532431021), we get a palindrome (35545854553).

The spelling of 12013423532 in words is "twelve billion, thirteen million, four hundred twenty-three thousand, five hundred thirty-two".