245658039089 has 2 divisors, whose sum is σ = 245658039090. Its totient is φ = 245658039088.

The previous prime is 245658039047. The next prime is 245658039149. The reversal of 245658039089 is 980930856542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165899806864 + 79758232225 = 407308^2 + 282415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245658039089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245658039019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122829019544 + 122829019545.

It is an arithmetic number, because the mean of its divisors is an integer number (122829019545).

Almost surely, 2^245658039089 is an apocalyptic number.

It is an amenable number.

245658039089 is a deficient number, since it is larger than the sum of its proper divisors (1).

245658039089 is an equidigital number, since it uses as much as digits as its factorization.

245658039089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 245658039089 in words is "two hundred forty-five billion, six hundred fifty-eight million, thirty-nine thousand, eighty-nine".