61162209120541 has 2 divisors, whose sum is σ = 61162209120542. Its totient is φ = 61162209120540.

The previous prime is 61162209120533. The next prime is 61162209120589. The reversal of 61162209120541 is 14502190226116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33845342405625 + 27316866714916 = 5817675^2 + 5226554^2 .

It is a cyclic number.

It is not a de Polignac number, because 61162209120541 - 2³ = 61162209120533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61162209120494 and 61162209120503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61162209120641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581104560270 + 30581104560271.

It is an arithmetic number, because the mean of its divisors is an integer number (30581104560271).

Almost surely, 2^{61162209120541} is an apocalyptic number.

It is an amenable number.

61162209120541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61162209120541 is an equidigital number, since it uses as much as digits as its factorization.

61162209120541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

Adding to 61162209120541 its reverse (14502190226116), we get a palindrome (75664399346657).

The spelling of 61162209120541 in words is "sixty-one trillion, one hundred sixty-two billion, two hundred nine million, one hundred twenty thousand, five hundred forty-one".