12831445485 has 48 divisors (see below), whose sum is σ = 23213696688. Its totient is φ = 6550502400.

The previous prime is 12831445483. The next prime is 12831445489. The reversal of 12831445485 is 58454413821.

12831445485 is a `hidden beast` number, since 1 + 28 + 3 + 144 + 5 + 485 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 64931364 + 12766514121 = 8058^2 + 112989^2 .

It is not a de Polignac number, because 12831445485 - 2¹ = 12831445483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12831445485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12831445481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32175 + ... + 163395.

It is an arithmetic number, because the mean of its divisors is an integer number (483618681).

Almost surely, 2^12831445485 is an apocalyptic number.

12831445485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12831445485 is a deficient number, since it is larger than the sum of its proper divisors (10382251203).

12831445485 is a wasteful number, since it uses less digits than its factorization.

12831445485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131326 (or 131323 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The spelling of 12831445485 in words is "twelve billion, eight hundred thirty-one million, four hundred forty-five thousand, four hundred eighty-five".