12479985431 has 4 divisors (see below), whose sum is σ = 12549706200. Its totient is φ = 12410264664.

The previous prime is 12479985389. The next prime is 12479985439. The reversal of 12479985431 is 13458997421.

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 12479985431 - 2¹⁸ = 12479723287 is a prime.

It is a super-2 number, since 2×12479985431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12479985439) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 34860116 + ... + 34860473.

It is an arithmetic number, because the mean of its divisors is an integer number (3137426550).

Almost surely, 2^12479985431 is an apocalyptic number.

12479985431 is a deficient number, since it is larger than the sum of its proper divisors (69720769).

12479985431 is an equidigital number, since it uses as much as digits as its factorization.

12479985431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69720768.

The product of its digits is 2177280, while the sum is 53.

The spelling of 12479985431 in words is "twelve billion, four hundred seventy-nine million, nine hundred eighty-five thousand, four hundred thirty-one".