4945857442209 has 16 divisors (see below), whose sum is σ = 7331836676800. Its totient is φ = 3295150085088.

The previous prime is 4945857442199. The next prime is 4945857442213. The reversal of 4945857442209 is 9022447585494.

It is a happy number.

4945857442209 is a `hidden beast` number, since 4 + 9 + 4 + 58 + 574 + 4 + 2 + 2 + 0 + 9 = 666.

It is not a de Polignac number, because 4945857442209 - 2⁴ = 4945857442193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4945857442609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57962404 + ... + 58047669.

It is an arithmetic number, because the mean of its divisors is an integer number (458239792300).

Almost surely, 2^{4945857442209} is an apocalyptic number.

It is an amenable number.

4945857442209 is a deficient number, since it is larger than the sum of its proper divisors (2385979234591).

4945857442209 is a wasteful number, since it uses less digits than its factorization.

4945857442209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116011661 (or 116011655 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 63.

The spelling of 4945857442209 in words is "four trillion, nine hundred forty-five billion, eight hundred fifty-seven million, four hundred forty-two thousand, two hundred nine".