5211171705213 has 12 divisors (see below), whose sum is σ = 7527271452220. Its totient is φ = 3474103654656.

The previous prime is 5211171705143. The next prime is 5211171705293. The reversal of 5211171705213 is 3125071711125.

5211171705213 is a `hidden beast` number, since 5 + 2 + 1 + 117 + 17 + 0 + 521 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 775417614084 + 4435754091129 = 880578^2 + 2106123^2 .

It is not a de Polignac number, because 5211171705213 - 2¹³ = 5211171697021 is a prime.

It is a super-3 number, since 3×5211171705213³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211171705293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3072303 + ... + 4456611.

Almost surely, 2^{5211171705213} is an apocalyptic number.

It is an amenable number.

5211171705213 is a deficient number, since it is larger than the sum of its proper divisors (2316099747007).

5211171705213 is a wasteful number, since it uses less digits than its factorization.

5211171705213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802588 (or 1802585 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 36.

The spelling of 5211171705213 in words is "five trillion, two hundred eleven billion, one hundred seventy-one million, seven hundred five thousand, two hundred thirteen".