245563316941 has 2 divisors, whose sum is σ = 245563316942. Its totient is φ = 245563316940.

The previous prime is 245563316923. The next prime is 245563316953. The reversal of 245563316941 is 149613365542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241723655716 + 3839661225 = 491654^2 + 61965^2 .

It is a cyclic number.

It is not a de Polignac number, because 245563316941 - 2²¹ = 245561219789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245563316041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122781658470 + 122781658471.

It is an arithmetic number, because the mean of its divisors is an integer number (122781658471).

Almost surely, 2^245563316941 is an apocalyptic number.

It is an amenable number.

245563316941 is a deficient number, since it is larger than the sum of its proper divisors (1).

245563316941 is an equidigital number, since it uses as much as digits as its factorization.

245563316941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 49.

The spelling of 245563316941 in words is "two hundred forty-five billion, five hundred sixty-three million, three hundred sixteen thousand, nine hundred forty-one".