5218207017849 has 16 divisors (see below), whose sum is σ = 8835059501440. Its totient is φ = 2981832581520.

The previous prime is 5218207017833. The next prime is 5218207017851. The reversal of 5218207017849 is 9487107028125.

5218207017849 is a `hidden beast` number, since 521 + 8 + 2 + 0 + 7 + 0 + 1 + 78 + 49 = 666.

It is not a de Polignac number, because 5218207017849 - 2⁴ = 5218207017833 is a prime.

It is a super-2 number, since 2×5218207017849² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5218207017795 and 5218207017804.

It is not an unprimeable number, because it can be changed into a prime (5218207017869) 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, 13804780282 + ... + 13804780659.

It is an arithmetic number, because the mean of its divisors is an integer number (552191218840).

Almost surely, 2^{5218207017849} is an apocalyptic number.

It is an amenable number.

5218207017849 is a deficient number, since it is larger than the sum of its proper divisors (3616852483591).

5218207017849 is a wasteful number, since it uses less digits than its factorization.

5218207017849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27609560957 (or 27609560951 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 5218207017849 in words is "five trillion, two hundred eighteen billion, two hundred seven million, seventeen thousand, eight hundred forty-nine".