12403117457 has 2 divisors, whose sum is σ = 12403117458. Its totient is φ = 12403117456.

The previous prime is 12403117403. The next prime is 12403117477. The reversal of 12403117457 is 75471130421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9302409601 + 3100707856 = 96449^2 + 55684^2 .

It is a cyclic number.

It is not a de Polignac number, because 12403117457 - 2²⁰ = 12402068881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12403117477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201558728 + 6201558729.

It is an arithmetic number, because the mean of its divisors is an integer number (6201558729).

Almost surely, 2^12403117457 is an apocalyptic number.

It is an amenable number.

12403117457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12403117457 is an equidigital number, since it uses as much as digits as its factorization.

12403117457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 12403117457 its reverse (75471130421), we get a palindrome (87874247878).

The spelling of 12403117457 in words is "twelve billion, four hundred three million, one hundred seventeen thousand, four hundred fifty-seven".