6530126561 has 24 divisors (see below), whose sum is σ = 7833496320. Its totient is φ = 5424777792.

The previous prime is 6530126543. The next prime is 6530126563. The reversal of 6530126561 is 1656210356.

It is not a de Polignac number, because 6530126561 - 2⁶ = 6530126497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6530126563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223445 + ... + 250973.

It is an arithmetic number, because the mean of its divisors is an integer number (326395680).

Almost surely, 2^6530126561 is an apocalyptic number.

It is an amenable number.

6530126561 is a deficient number, since it is larger than the sum of its proper divisors (1303369759).

6530126561 is a wasteful number, since it uses less digits than its factorization.

6530126561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27693 (or 27686 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 6530126561 is about 80809.1984924984. The cubic root of 6530126561 is about 1869.1344103236.

The spelling of 6530126561 in words is "six billion, five hundred thirty million, one hundred twenty-six thousand, five hundred sixty-one".