12442513451 has 4 divisors (see below), whose sum is σ = 13097382600. Its totient is φ = 11787644304.

The previous prime is 12442513441. The next prime is 12442513453. The reversal of 12442513451 is 15431524421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12442513451 - 2¹⁰ = 12442512427 is a prime.

It is a super-2 number, since 2×12442513451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12442513453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327434546 + ... + 327434583.

It is an arithmetic number, because the mean of its divisors is an integer number (3274345650).

Almost surely, 2^12442513451 is an apocalyptic number.

12442513451 is a deficient number, since it is larger than the sum of its proper divisors (654869149).

12442513451 is an equidigital number, since it uses as much as digits as its factorization.

12442513451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654869148.

The product of its digits is 19200, while the sum is 32.

The spelling of 12442513451 in words is "twelve billion, four hundred forty-two million, five hundred thirteen thousand, four hundred fifty-one".