12451334220515 has 32 divisors (see below), whose sum is σ = 15460474698240. Its totient is φ = 9620626369536.

The previous prime is 12451334220491. The next prime is 12451334220553. The reversal of 12451334220515 is 51502243315421.

It is a cyclic number.

It is not a de Polignac number, because 12451334220515 - 2¹⁴ = 12451334204131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14485856 + ... + 15321314.

It is an arithmetic number, because the mean of its divisors is an integer number (483139834320).

Almost surely, 2^{12451334220515} is an apocalyptic number.

12451334220515 is a deficient number, since it is larger than the sum of its proper divisors (3009140477725).

12451334220515 is a wasteful number, since it uses less digits than its factorization.

12451334220515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836283.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 12451334220515 its reverse (51502243315421), we get a palindrome (63953577535936).

The spelling of 12451334220515 in words is "twelve trillion, four hundred fifty-one billion, three hundred thirty-four million, two hundred twenty thousand, five hundred fifteen".