12146481517 has 2 divisors, whose sum is σ = 12146481518.
Its totient is φ = 12146481516.
The previous prime is 12146481511. The next prime is 12146481559. The reversal of 12146481517 is 71518464121.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 10762195081 + 1384286436 = 103741^2 + 37206^2
It is a cyclic number.
It is not a de Polignac number, because 12146481517 - 23 = 12146481509 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 12146481517.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12146481511) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6073240758 + 6073240759.
It is an arithmetic number, because the mean of its divisors is an integer number (6073240759).
Almost surely, 212146481517 is an apocalyptic number.
It is an amenable number.
12146481517 is a deficient number, since it is larger than the sum of its proper divisors (1).
12146481517 is an equidigital number, since it uses as much as digits as its factorization.
12146481517 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 53760, while the sum is 40.
The spelling of 12146481517 in words is "twelve billion, one hundred forty-six million, four hundred eighty-one thousand, five hundred seventeen".