12662015417 has 2 divisors, whose sum is σ = 12662015418. Its totient is φ = 12662015416.

The previous prime is 12662015371. The next prime is 12662015423. The reversal of 12662015417 is 71451026621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8268446761 + 4393568656 = 90931^2 + 66284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12662015417 is a prime.

It is a super-4 number, since 4×12662015417⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (12662015477) 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 as a sum of consecutive naturals, namely, 6331007708 + 6331007709.

It is an arithmetic number, because the mean of its divisors is an integer number (6331007709).

Almost surely, 2^12662015417 is an apocalyptic number.

It is an amenable number.

12662015417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12662015417 is an equidigital number, since it uses as much as digits as its factorization.

12662015417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12662015417 in words is "twelve billion, six hundred sixty-two million, fifteen thousand, four hundred seventeen".