245354043497 has 2 divisors, whose sum is σ = 245354043498. Its totient is φ = 245354043496.

The previous prime is 245354043457. The next prime is 245354043503. The reversal of 245354043497 is 794340453542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181696735081 + 63657308416 = 426259^2 + 252304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245354043497 is a prime.

It is not a weakly prime, because it can be changed into another prime (245354043427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122677021748 + 122677021749.

It is an arithmetic number, because the mean of its divisors is an integer number (122677021749).

Almost surely, 2^245354043497 is an apocalyptic number.

It is an amenable number.

245354043497 is a deficient number, since it is larger than the sum of its proper divisors (1).

245354043497 is an equidigital number, since it uses as much as digits as its factorization.

245354043497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 50.

The spelling of 245354043497 in words is "two hundred forty-five billion, three hundred fifty-four million, forty-three thousand, four hundred ninety-seven".