5187776205869 has 2 divisors, whose sum is σ = 5187776205870. Its totient is φ = 5187776205868.

The previous prime is 5187776205847. The next prime is 5187776205979. The reversal of 5187776205869 is 9685026777815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2674958380900 + 2512817824969 = 1635530^2 + 1585187^2 .

It is a cyclic number.

It is not a de Polignac number, because 5187776205869 - 2²⁰ = 5187775157293 is a prime.

It is a super-2 number, since 2×5187776205869² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5187776205569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2593888102934 + 2593888102935.

It is an arithmetic number, because the mean of its divisors is an integer number (2593888102935).

Almost surely, 2^{5187776205869} is an apocalyptic number.

It is an amenable number.

5187776205869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5187776205869 is an equidigital number, since it uses as much as digits as its factorization.

5187776205869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 355622400, while the sum is 71.

The spelling of 5187776205869 in words is "five trillion, one hundred eighty-seven billion, seven hundred seventy-six million, two hundred five thousand, eight hundred sixty-nine".