6561350101 has 2 divisors, whose sum is σ = 6561350102. Its totient is φ = 6561350100.

The previous prime is 6561350077. The next prime is 6561350129. The reversal of 6561350101 is 1010531656.

It is an a-pointer prime, because the next prime (6561350129) can be obtained adding 6561350101 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4359300625 + 2202049476 = 66025^2 + 46926^2 .

It is a cyclic number.

It is not a de Polignac number, because 6561350101 - 2⁷ = 6561349973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6561350101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6561356101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280675050 + 3280675051.

It is an arithmetic number, because the mean of its divisors is an integer number (3280675051).

Almost surely, 2^6561350101 is an apocalyptic number.

It is an amenable number.

6561350101 is a deficient number, since it is larger than the sum of its proper divisors (1).

6561350101 is an equidigital number, since it uses as much as digits as its factorization.

6561350101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 6561350101 is about 81002.1610884549. The cubic root of 6561350101 is about 1872.1087387108.

Adding to 6561350101 its reverse (1010531656), we get a palindrome (7571881757).

The spelling of 6561350101 in words is "six billion, five hundred sixty-one million, three hundred fifty thousand, one hundred one".