245436374502493 has 2 divisors, whose sum is σ = 245436374502494. Its totient is φ = 245436374502492.

The previous prime is 245436374502491. The next prime is 245436374502499. The reversal of 245436374502493 is 394205473634542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178818995671684 + 66617378830809 = 13372322^2 + 8161947^2 .

It is a cyclic number.

It is not a de Polignac number, because 245436374502493 - 2¹ = 245436374502491 is a prime.

Together with 245436374502491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245436374502491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122718187251246 + 122718187251247.

It is an arithmetic number, because the mean of its divisors is an integer number (122718187251247).

Almost surely, 2^{245436374502493} is an apocalyptic number.

It is an amenable number.

245436374502493 is a deficient number, since it is larger than the sum of its proper divisors (1).

245436374502493 is an equidigital number, since it uses as much as digits as its factorization.

245436374502493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 261273600, while the sum is 61.

The spelling of 245436374502493 in words is "two hundred forty-five trillion, four hundred thirty-six billion, three hundred seventy-four million, five hundred two thousand, four hundred ninety-three".