12421716144 has 40 divisors (see below), whose sum is σ = 32165707632. Its totient is φ = 4130730240.

The previous prime is 12421716137. The next prime is 12421716163. The reversal of 12421716144 is 44161712421.

It is a super-2 number, since 2×12421716144² (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 7 ways as a sum of consecutive naturals, for example, 287139 + ... + 327554.

Almost surely, 2^12421716144 is an apocalyptic number.

It is an amenable number.

12421716144 is an abundant number, since it is smaller than the sum of its proper divisors (19743991488).

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

12421716144 is a wasteful number, since it uses less digits than its factorization.

12421716144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615125 (or 615119 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The spelling of 12421716144 in words is "twelve billion, four hundred twenty-one million, seven hundred sixteen thousand, one hundred forty-four".