2236161240461 has 2 divisors, whose sum is σ = 2236161240462. Its totient is φ = 2236161240460.

The previous prime is 2236161240437. The next prime is 2236161240541. The reversal of 2236161240461 is 1640421616322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1567191015625 + 668970224836 = 1251875^2 + 817906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2236161240461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2236161200461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118080620230 + 1118080620231.

It is an arithmetic number, because the mean of its divisors is an integer number (1118080620231).

Almost surely, 2^{2236161240461} is an apocalyptic number.

It is an amenable number.

2236161240461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2236161240461 is an equidigital number, since it uses as much as digits as its factorization.

2236161240461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

Adding to 2236161240461 its reverse (1640421616322), we get a palindrome (3876582856783).

The spelling of 2236161240461 in words is "two trillion, two hundred thirty-six billion, one hundred sixty-one million, two hundred forty thousand, four hundred sixty-one".