36546536561 has 2 divisors, whose sum is σ = 36546536562. Its totient is φ = 36546536560.

The previous prime is 36546536519. The next prime is 36546536563. The reversal of 36546536561 is 16563564563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421432336 + 125104225 = 190844^2 + 11185^2 .

It is a cyclic number.

It is not a de Polignac number, because 36546536561 - 2³⁰ = 35472794737 is a prime.

Together with 36546536563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36546536563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18273268280 + 18273268281.

It is an arithmetic number, because the mean of its divisors is an integer number (18273268281).

Almost surely, 2^36546536561 is an apocalyptic number.

It is an amenable number.

36546536561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36546536561 is an equidigital number, since it uses as much as digits as its factorization.

36546536561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832000, while the sum is 50.

The spelling of 36546536561 in words is "thirty-six billion, five hundred forty-six million, five hundred thirty-six thousand, five hundred sixty-one".