6506061561 has 8 divisors (see below), whose sum is σ = 9638609760. Its totient is φ = 4337374356.

The previous prime is 6506061553. The next prime is 6506061593. The reversal of 6506061561 is 1651606056.

6506061561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6506061561 - 2³ = 6506061553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6506061061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120482595 + ... + 120482648.

It is an arithmetic number, because the mean of its divisors is an integer number (1204826220).

Almost surely, 2^6506061561 is an apocalyptic number.

It is an amenable number.

6506061561 is a deficient number, since it is larger than the sum of its proper divisors (3132548199).

6506061561 is a wasteful number, since it uses less digits than its factorization.

6506061561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240965252 (or 240965246 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6506061561 is about 80660.1609284286. The cubic root of 6506061561 is about 1866.8355223775.

It can be divided in two parts, 65060 and 61561, that added together give a palindrome (126621).

The spelling of 6506061561 in words is "six billion, five hundred six million, sixty-one thousand, five hundred sixty-one".