12479818085 has 12 divisors (see below), whose sum is σ = 17420807628. Its totient is φ = 8557589376.

The previous prime is 12479818081. The next prime is 12479818093. The reversal of 12479818085 is 58081897421.

It can be written as a sum of positive squares in 2 ways, for example, as 4509256801 + 7970561284 = 67151^2 + 89278^2 .

It is not a de Polignac number, because 12479818085 - 2² = 12479818081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12479818081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25468772 + ... + 25469261.

It is an arithmetic number, because the mean of its divisors is an integer number (1451733969).

Almost surely, 2^12479818085 is an apocalyptic number.

It is an amenable number.

12479818085 is a deficient number, since it is larger than the sum of its proper divisors (4940989543).

12479818085 is an equidigital number, since it uses as much as digits as its factorization.

12479818085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50938052 (or 50938045 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 12479818085 in words is "twelve billion, four hundred seventy-nine million, eight hundred eighteen thousand, eighty-five".