245209059811 has 2 divisors, whose sum is σ = 245209059812. Its totient is φ = 245209059810.

The previous prime is 245209059793. The next prime is 245209059827. The reversal of 245209059811 is 118950902542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245209059811 - 2⁹ = 245209059299 is a prime.

It is not a weakly prime, because it can be changed into another prime (245209059881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122604529905 + 122604529906.

It is an arithmetic number, because the mean of its divisors is an integer number (122604529906).

Almost surely, 2^245209059811 is an apocalyptic number.

245209059811 is a deficient number, since it is larger than the sum of its proper divisors (1).

245209059811 is an equidigital number, since it uses as much as digits as its factorization.

245209059811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 245209059811 in words is "two hundred forty-five billion, two hundred nine million, fifty-nine thousand, eight hundred eleven".