245646814901 has 2 divisors, whose sum is σ = 245646814902. Its totient is φ = 245646814900.

The previous prime is 245646814873. The next prime is 245646814909. The reversal of 245646814901 is 109418646542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244654879876 + 991935025 = 494626^2 + 31495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245646814901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245646814901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245646814909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122823407450 + 122823407451.

It is an arithmetic number, because the mean of its divisors is an integer number (122823407451).

Almost surely, 2^245646814901 is an apocalyptic number.

It is an amenable number.

245646814901 is a deficient number, since it is larger than the sum of its proper divisors (1).

245646814901 is an equidigital number, since it uses as much as digits as its factorization.

245646814901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 245646814901 in words is "two hundred forty-five billion, six hundred forty-six million, eight hundred fourteen thousand, nine hundred one".