5218239364477 has 2 divisors, whose sum is σ = 5218239364478. Its totient is φ = 5218239364476.

The previous prime is 5218239364451. The next prime is 5218239364489. The reversal of 5218239364477 is 7744639328125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5157572718841 + 60666645636 = 2271029^2 + 246306^2 .

It is a cyclic number.

It is not a de Polignac number, because 5218239364477 - 2³¹ = 5216091880829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5218239364417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2609119682238 + 2609119682239.

It is an arithmetic number, because the mean of its divisors is an integer number (2609119682239).

Almost surely, 2^{5218239364477} is an apocalyptic number.

It is an amenable number.

5218239364477 is a deficient number, since it is larger than the sum of its proper divisors (1).

5218239364477 is an equidigital number, since it uses as much as digits as its factorization.

5218239364477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 61.

The spelling of 5218239364477 in words is "five trillion, two hundred eighteen billion, two hundred thirty-nine million, three hundred sixty-four thousand, four hundred seventy-seven".