245461656553 has 2 divisors, whose sum is σ = 245461656554. Its totient is φ = 245461656552.

The previous prime is 245461656509. The next prime is 245461656577. The reversal of 245461656553 is 355656164542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137649904144 + 107811752409 = 371012^2 + 328347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245461656553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245461656553.

It is not a weakly prime, because it can be changed into another prime (245461696553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122730828276 + 122730828277.

It is an arithmetic number, because the mean of its divisors is an integer number (122730828277).

Almost surely, 2^245461656553 is an apocalyptic number.

It is an amenable number.

245461656553 is a deficient number, since it is larger than the sum of its proper divisors (1).

245461656553 is an equidigital number, since it uses as much as digits as its factorization.

245461656553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960000, while the sum is 52.

The spelling of 245461656553 in words is "two hundred forty-five billion, four hundred sixty-one million, six hundred fifty-six thousand, five hundred fifty-three".