36161230561 has 2 divisors, whose sum is σ = 36161230562. Its totient is φ = 36161230560.

The previous prime is 36161230543. The next prime is 36161230571. The reversal of 36161230561 is 16503216163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21732656400 + 14428574161 = 147420^2 + 120119^2 .

It is a cyclic number.

It is not a de Polignac number, because 36161230561 - 2¹³ = 36161222369 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (36161230571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18080615280 + 18080615281.

It is an arithmetic number, because the mean of its divisors is an integer number (18080615281).

Almost surely, 2^36161230561 is an apocalyptic number.

It is an amenable number.

36161230561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36161230561 is an equidigital number, since it uses as much as digits as its factorization.

36161230561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 36161230561 in words is "thirty-six billion, one hundred sixty-one million, two hundred thirty thousand, five hundred sixty-one".