12434622643421 has 8 divisors (see below), whose sum is σ = 13577803990464. Its totient is φ = 11293568147520.

The previous prime is 12434622643367. The next prime is 12434622643483.

12434622643421 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12434622643421 - 2¹⁰ = 12434622642397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12434622643721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531700556 + ... + 531723941.

It is an arithmetic number, because the mean of its divisors is an integer number (1697225498808).

Almost surely, 2^{12434622643421} is an apocalyptic number.

12434622643421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12434622643421 is a deficient number, since it is larger than the sum of its proper divisors (1143181347043).

12434622643421 is a wasteful number, since it uses less digits than its factorization.

12434622643421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063425571.

The product of its digits is 1327104, while the sum is 44.

It can be divided in two parts, 1243462 and 2643421, that added together give a palindrome (3886883).

The spelling of 12434622643421 in words is "twelve trillion, four hundred thirty-four billion, six hundred twenty-two million, six hundred forty-three thousand, four hundred twenty-one".