36361565521 has 2 divisors, whose sum is σ = 36361565522. Its totient is φ = 36361565520.

The previous prime is 36361565503. The next prime is 36361565531. The reversal of 36361565521 is 12556516363.

36361565521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33915273921 + 2446291600 = 184161^2 + 49460^2 .

It is a cyclic number.

It is not a de Polignac number, because 36361565521 - 2³¹ = 34214081873 is a prime.

It is not a weakly prime, because it can be changed into another prime (36361565531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18180782760 + 18180782761.

It is an arithmetic number, because the mean of its divisors is an integer number (18180782761).

Almost surely, 2^36361565521 is an apocalyptic number.

It is an amenable number.

36361565521 is a deficient number, since it is larger than the sum of its proper divisors (1).

36361565521 is an equidigital number, since it uses as much as digits as its factorization.

36361565521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 43.

The spelling of 36361565521 in words is "thirty-six billion, three hundred sixty-one million, five hundred sixty-five thousand, five hundred twenty-one".