6506562561 has 8 divisors (see below), whose sum is σ = 8676089184. Its totient is φ = 4337372160.

The previous prime is 6506562551. The next prime is 6506562571. The reversal of 6506562561 is 1652656056.

It is an interprime number because it is at equal distance from previous prime (6506562551) and next prime (6506562571).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6506562561 - 2⁶ = 6506562497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6506562551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34771 + ... + 119256.

It is an arithmetic number, because the mean of its divisors is an integer number (1084511148).

Almost surely, 2^6506562561 is an apocalyptic number.

It is an amenable number.

6506562561 is a deficient number, since it is larger than the sum of its proper divisors (2169526623).

6506562561 is a wasteful number, since it uses less digits than its factorization.

6506562561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168111.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 6506562561 is about 80663.2664910119. The cubic root of 6506562561 is about 1866.8834397738.

The spelling of 6506562561 in words is "six billion, five hundred six million, five hundred sixty-two thousand, five hundred sixty-one".