36606165521 has 2 divisors, whose sum is σ = 36606165522. Its totient is φ = 36606165520.

The previous prime is 36606165511. The next prime is 36606165527. The reversal of 36606165521 is 12556160663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35751246400 + 854919121 = 189080^2 + 29239^2 .

It is a cyclic number.

It is not a de Polignac number, because 36606165521 - 2¹⁴ = 36606149137 is a prime.

It is a super-2 number, since 2×36606165521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36606165527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18303082760 + 18303082761.

It is an arithmetic number, because the mean of its divisors is an integer number (18303082761).

Almost surely, 2^36606165521 is an apocalyptic number.

It is an amenable number.

36606165521 is a deficient number, since it is larger than the sum of its proper divisors (1).

36606165521 is an equidigital number, since it uses as much as digits as its factorization.

36606165521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 36606165521 in words is "thirty-six billion, six hundred six million, one hundred sixty-five thousand, five hundred twenty-one".