4845145205161 has 2 divisors, whose sum is σ = 4845145205162. Its totient is φ = 4845145205160.

The previous prime is 4845145205113. The next prime is 4845145205221. The reversal of 4845145205161 is 1615025415484.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4800853477225 + 44291727936 = 2191085^2 + 210456^2 .

It is a cyclic number.

It is not a de Polignac number, because 4845145205161 - 2¹⁷ = 4845145074089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4845145205861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2422572602580 + 2422572602581.

It is an arithmetic number, because the mean of its divisors is an integer number (2422572602581).

Almost surely, 2^{4845145205161} is an apocalyptic number.

It is an amenable number.

4845145205161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4845145205161 is an equidigital number, since it uses as much as digits as its factorization.

4845145205161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768000, while the sum is 46.

The spelling of 4845145205161 in words is "four trillion, eight hundred forty-five billion, one hundred forty-five million, two hundred five thousand, one hundred sixty-one".