6561713235 has 144 divisors (see below), whose sum is σ = 13591216800. Its totient is φ = 2693053440.

The previous prime is 6561713231. The next prime is 6561713243. The reversal of 6561713235 is 5323171656.

It is not a de Polignac number, because 6561713235 - 2² = 6561713231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6561713193 and 6561713202.

It is not an unprimeable number, because it can be changed into a prime (6561713231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7914801 + ... + 7915629.

It is an arithmetic number, because the mean of its divisors is an integer number (94383450).

Almost surely, 2^6561713235 is an apocalyptic number.

6561713235 is an abundant number, since it is smaller than the sum of its proper divisors (7029503565).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6561713235 is a wasteful number, since it uses less digits than its factorization.

6561713235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 944 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 6561713235 is about 81004.4025655396. The cubic root of 6561713235 is about 1872.1432749867.

The spelling of 6561713235 in words is "six billion, five hundred sixty-one million, seven hundred thirteen thousand, two hundred thirty-five".