245521716373 has 2 divisors, whose sum is σ = 245521716374. Its totient is φ = 245521716372.

The previous prime is 245521716361. The next prime is 245521716379. The reversal of 245521716373 is 373617125542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146659893444 + 98861822929 = 382962^2 + 314423^2 .

It is a cyclic number.

It is not a de Polignac number, because 245521716373 - 2⁹ = 245521715861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245521716379) 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, 122760858186 + 122760858187.

It is an arithmetic number, because the mean of its divisors is an integer number (122760858187).

Almost surely, 2^245521716373 is an apocalyptic number.

It is an amenable number.

245521716373 is a deficient number, since it is larger than the sum of its proper divisors (1).

245521716373 is an equidigital number, since it uses as much as digits as its factorization.

245521716373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 46.

The spelling of 245521716373 in words is "two hundred forty-five billion, five hundred twenty-one million, seven hundred sixteen thousand, three hundred seventy-three".