5187776205909 has 16 divisors (see below), whose sum is σ = 7706406435840. Its totient is φ = 3077210901360.

The previous prime is 5187776205869. The next prime is 5187776205979. The reversal of 5187776205909 is 9095026777815.

It is a happy number.

It is not a de Polignac number, because 5187776205909 - 2⁹ = 5187776205397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5187776205909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187776205979) 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, 1672395679 + ... + 1672398780.

It is an arithmetic number, because the mean of its divisors is an integer number (481650402240).

Almost surely, 2^{5187776205909} is an apocalyptic number.

It is an amenable number.

5187776205909 is a deficient number, since it is larger than the sum of its proper divisors (2518630229931).

5187776205909 is a wasteful number, since it uses less digits than its factorization.

5187776205909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344794520.

The product of its (nonzero) digits is 66679200, while the sum is 66.

The spelling of 5187776205909 in words is "five trillion, one hundred eighty-seven billion, seven hundred seventy-six million, two hundred five thousand, nine hundred nine".