245418620171 has 2 divisors, whose sum is σ = 245418620172. Its totient is φ = 245418620170.

The previous prime is 245418620137. The next prime is 245418620203. The reversal of 245418620171 is 171026814542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245418620171 - 2⁶ = 245418620107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (245418620471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122709310085 + 122709310086.

It is an arithmetic number, because the mean of its divisors is an integer number (122709310086).

Almost surely, 2^245418620171 is an apocalyptic number.

245418620171 is a deficient number, since it is larger than the sum of its proper divisors (1).

245418620171 is an equidigital number, since it uses as much as digits as its factorization.

245418620171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 245418620171 in words is "two hundred forty-five billion, four hundred eighteen million, six hundred twenty thousand, one hundred seventy-one".