245869641089 has 2 divisors, whose sum is σ = 245869641090. Its totient is φ = 245869641088.

The previous prime is 245869641077. The next prime is 245869641163. The reversal of 245869641089 is 980146968542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191576913025 + 54292728064 = 437695^2 + 233008^2 .

It is a cyclic number.

It is not a de Polignac number, because 245869641089 - 2¹² = 245869636993 is a prime.

It is not a weakly prime, because it can be changed into another prime (245869641019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122934820544 + 122934820545.

It is an arithmetic number, because the mean of its divisors is an integer number (122934820545).

Almost surely, 2^245869641089 is an apocalyptic number.

It is an amenable number.

245869641089 is a deficient number, since it is larger than the sum of its proper divisors (1).

245869641089 is an equidigital number, since it uses as much as digits as its factorization.

245869641089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 245869641089 in words is "two hundred forty-five billion, eight hundred sixty-nine million, six hundred forty-one thousand, eighty-nine".