12438902393497 has 2 divisors, whose sum is σ = 12438902393498. Its totient is φ = 12438902393496.

The previous prime is 12438902393461. The next prime is 12438902393501. The reversal of 12438902393497 is 79439320983421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9505530274816 + 2933372118681 = 3083104^2 + 1712709^2 .

It is a cyclic number.

It is not a de Polignac number, because 12438902393497 - 2¹¹ = 12438902391449 is a prime.

It is not a weakly prime, because it can be changed into another prime (12438902393417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219451196748 + 6219451196749.

It is an arithmetic number, because the mean of its divisors is an integer number (6219451196749).

Almost surely, 2^{12438902393497} is an apocalyptic number.

It is an amenable number.

12438902393497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12438902393497 is an equidigital number, since it uses as much as digits as its factorization.

12438902393497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70543872, while the sum is 64.

The spelling of 12438902393497 in words is "twelve trillion, four hundred thirty-eight billion, nine hundred two million, three hundred ninety-three thousand, four hundred ninety-seven".