61168486117 has 2 divisors, whose sum is σ = 61168486118. Its totient is φ = 61168486116.

The previous prime is 61168486111. The next prime is 61168486139. The reversal of 61168486117 is 71168486116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52786900516 + 8381585601 = 229754^2 + 91551^2 .

It is a cyclic number.

It is not a de Polignac number, because 61168486117 - 2³ = 61168486109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61168486111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30584243058 + 30584243059.

It is an arithmetic number, because the mean of its divisors is an integer number (30584243059).

Almost surely, 2^61168486117 is an apocalyptic number.

It is an amenable number.

61168486117 is a deficient number, since it is larger than the sum of its proper divisors (1).

61168486117 is an equidigital number, since it uses as much as digits as its factorization.

61168486117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

Subtracting 61168486117 from its reverse (71168486116), we obtain a palindrome (9999999999).

The spelling of 61168486117 in words is "sixty-one billion, one hundred sixty-eight million, four hundred eighty-six thousand, one hundred seventeen".