12642343532 has 24 divisors (see below), whose sum is σ = 27229663776. Its totient is φ = 5001366528.

The previous prime is 12642343529. The next prime is 12642343561. The reversal of 12642343532 is 23534324621.

It is a happy number.

It is a super-2 number, since 2×12642343532² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12642343492 and 12642343501.

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, 17365493 + ... + 17366220.

It is an arithmetic number, because the mean of its divisors is an integer number (1134569324).

Almost surely, 2^12642343532 is an apocalyptic number.

It is an amenable number.

12642343532 is an abundant number, since it is smaller than the sum of its proper divisors (14587320244).

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

12642343532 is a wasteful number, since it uses less digits than its factorization.

12642343532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34731737 (or 34731735 counting only the distinct ones).

The product of its digits is 103680, while the sum is 35.

The spelling of 12642343532 in words is "twelve billion, six hundred forty-two million, three hundred forty-three thousand, five hundred thirty-two".