6557887013 has 2 divisors, whose sum is σ = 6557887014. Its totient is φ = 6557887012.

The previous prime is 6557886997. The next prime is 6557887057. The reversal of 6557887013 is 3107887556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5717930689 + 839956324 = 75617^2 + 28982^2 .

It is a cyclic number.

It is not a de Polignac number, because 6557887013 - 2⁴ = 6557886997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6557887813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278943506 + 3278943507.

It is an arithmetic number, because the mean of its divisors is an integer number (3278943507).

Almost surely, 2^6557887013 is an apocalyptic number.

It is an amenable number.

6557887013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557887013 is an equidigital number, since it uses as much as digits as its factorization.

6557887013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The square root of 6557887013 is about 80980.7817509809. The cubic root of 6557887013 is about 1871.7793137109.

The spelling of 6557887013 in words is "six billion, five hundred fifty-seven million, eight hundred eighty-seven thousand, thirteen".