12421253614456 has 8 divisors (see below), whose sum is σ = 23289850527120. Its totient is φ = 6210626807224.

The previous prime is 12421253614433. The next prime is 12421253614481. The reversal of 12421253614456 is 65441635212421.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776328350896 + ... + 776328350911.

It is an arithmetic number, because the mean of its divisors is an integer number (2911231315890).

Almost surely, 2^{12421253614456} is an apocalyptic number.

It is an amenable number.

12421253614456 is a deficient number, since it is larger than the sum of its proper divisors (10868596912664).

12421253614456 is a wasteful number, since it uses less digits than its factorization.

12421253614456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552656701813 (or 1552656701809 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 46.

Adding to 12421253614456 its reverse (65441635212421), we get a palindrome (77862888826877).

The spelling of 12421253614456 in words is "twelve trillion, four hundred twenty-one billion, two hundred fifty-three million, six hundred fourteen thousand, four hundred fifty-six".