12511234454331 has 16 divisors (see below), whose sum is σ = 16910420705280. Its totient is φ = 8226439087680.

The previous prime is 12511234454227. The next prime is 12511234454377. The reversal of 12511234454331 is 13345443211521.

It is not a de Polignac number, because 12511234454331 - 2¹⁸ = 12511234192187 is a prime.

It is a super-2 number, since 2×12511234454331² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12511234454331.

It is not an unprimeable number, because it can be changed into a prime (12511234450331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15155446 + ... + 15959636.

It is an arithmetic number, because the mean of its divisors is an integer number (1056901294080).

Almost surely, 2^{12511234454331} is an apocalyptic number.

12511234454331 is a deficient number, since it is larger than the sum of its proper divisors (4399186250949).

12511234454331 is an equidigital number, since it uses as much as digits as its factorization.

12511234454331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875306.

The product of its digits is 172800, while the sum is 39.

Adding to 12511234454331 its reverse (13345443211521), we get a palindrome (25856677665852).

The spelling of 12511234454331 in words is "twelve trillion, five hundred eleven billion, two hundred thirty-four million, four hundred fifty-four thousand, three hundred thirty-one".