6506556711 has 4 divisors (see below), whose sum is σ = 8675408952. Its totient is φ = 4337704472.

The previous prime is 6506556689. The next prime is 6506556767. The reversal of 6506556711 is 1176556056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6506556711 - 2¹³ = 6506548519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506556781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084426116 + ... + 1084426121.

It is an arithmetic number, because the mean of its divisors is an integer number (2168852238).

Almost surely, 2^6506556711 is an apocalyptic number.

6506556711 is a deficient number, since it is larger than the sum of its proper divisors (2168852241).

6506556711 is a wasteful number, since it uses less digits than its factorization.

6506556711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168852240.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 6506556711 is about 80663.2302291447. The cubic root of 6506556711 is about 1866.8828802735.

The spelling of 6506556711 in words is "six billion, five hundred six million, five hundred fifty-six thousand, seven hundred eleven".