12478734497 has 2 divisors, whose sum is σ = 12478734498. Its totient is φ = 12478734496.

The previous prime is 12478734427. The next prime is 12478734503. The reversal of 12478734497 is 79443787421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11804605201 + 674129296 = 108649^2 + 25964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12478734497 - 2⁸ = 12478734241 is a prime.

It is not a weakly prime, because it can be changed into another prime (12478734427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239367248 + 6239367249.

It is an arithmetic number, because the mean of its divisors is an integer number (6239367249).

Almost surely, 2^12478734497 is an apocalyptic number.

It is an amenable number.

12478734497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12478734497 is an equidigital number, since it uses as much as digits as its factorization.

12478734497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 56.

The spelling of 12478734497 in words is "twelve billion, four hundred seventy-eight million, seven hundred thirty-four thousand, four hundred ninety-seven".