12435212456 has 8 divisors (see below), whose sum is σ = 23316023370. Its totient is φ = 6217606224.

The previous prime is 12435212443. The next prime is 12435212459. The reversal of 12435212456 is 65421253421.

It can be written as a sum of positive squares in only one way, i.e., 8973772900 + 3461439556 = 94730^2 + 58834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12435212459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777200771 + ... + 777200786.

Almost surely, 2^12435212456 is an apocalyptic number.

It is an amenable number.

12435212456 is a deficient number, since it is larger than the sum of its proper divisors (10880810914).

12435212456 is a wasteful number, since it uses less digits than its factorization.

12435212456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554401563 (or 1554401559 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 12435212456 its reverse (65421253421), we get a palindrome (77856465877).

The spelling of 12435212456 in words is "twelve billion, four hundred thirty-five million, two hundred twelve thousand, four hundred fifty-six".