12516433556 has 48 divisors (see below), whose sum is σ = 24596913600. Its totient is φ = 5522872320.

The previous prime is 12516433541. The next prime is 12516433577. The reversal of 12516433556 is 65533461521.

It is a super-2 number, since 2×12516433556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 722411 + ... + 739533.

It is an arithmetic number, because the mean of its divisors is an integer number (512435700).

Almost surely, 2^12516433556 is an apocalyptic number.

It is an amenable number.

12516433556 is a deficient number, since it is larger than the sum of its proper divisors (12080480044).

12516433556 is a wasteful number, since it uses less digits than its factorization.

12516433556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17624 (or 17622 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The spelling of 12516433556 in words is "twelve billion, five hundred sixteen million, four hundred thirty-three thousand, five hundred fifty-six".