12640616041 has 8 divisors (see below), whose sum is σ = 12662397000. Its totient is φ = 12618852480.

The previous prime is 12640616003. The next prime is 12640616047. The reversal of 12640616041 is 14061604621.

It can be written as a sum of positive squares in 4 ways, for example, as 802305625 + 11838310416 = 28325^2 + 108804^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12640616041 - 2¹³ = 12640607849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12640615994 and 12640616012.

It is not an unprimeable number, because it can be changed into a prime (12640616047) 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 7 ways as a sum of consecutive naturals, for example, 2857011 + ... + 2861431.

It is an arithmetic number, because the mean of its divisors is an integer number (1582799625).

Almost surely, 2^12640616041 is an apocalyptic number.

It is an amenable number.

12640616041 is a deficient number, since it is larger than the sum of its proper divisors (21780959).

12640616041 is an equidigital number, since it uses as much as digits as its factorization.

12640616041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 12640616041 in words is "twelve billion, six hundred forty million, six hundred sixteen thousand, forty-one".