36460861561 has 4 divisors (see below), whose sum is σ = 36960325492. Its totient is φ = 35961397632.

The previous prime is 36460861511. The next prime is 36460861589. The reversal of 36460861561 is 16516806463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16516806463 = 163 ⋅101330101.

It can be written as a sum of positive squares in 2 ways, for example, as 25978992400 + 10481869161 = 161180^2 + 102381^2 .

It is a cyclic number.

It is not a de Polignac number, because 36460861561 - 2¹³ = 36460853369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36460861511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249731856 + ... + 249732001.

It is an arithmetic number, because the mean of its divisors is an integer number (9240081373).

Almost surely, 2^36460861561 is an apocalyptic number.

It is an amenable number.

36460861561 is a deficient number, since it is larger than the sum of its proper divisors (499463931).

36460861561 is an equidigital number, since it uses as much as digits as its factorization.

36460861561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499463930.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 36460861561 in words is "thirty-six billion, four hundred sixty million, eight hundred sixty-one thousand, five hundred sixty-one".