61110499169 has 2 divisors, whose sum is σ = 61110499170. Its totient is φ = 61110499168.

The previous prime is 61110499141. The next prime is 61110499171. The reversal of 61110499169 is 96199401116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59387253025 + 1723246144 = 243695^2 + 41512^2 .

It is a cyclic number.

It is not a de Polignac number, because 61110499169 - 2⁸ = 61110498913 is a prime.

It is a super-2 number, since 2×61110499169² (a number of 22 digits) contains 22 as substring.

Together with 61110499171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61110499969) 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 as a sum of consecutive naturals, namely, 30555249584 + 30555249585.

It is an arithmetic number, because the mean of its divisors is an integer number (30555249585).

Almost surely, 2^61110499169 is an apocalyptic number.

It is an amenable number.

61110499169 is a deficient number, since it is larger than the sum of its proper divisors (1).

61110499169 is an equidigital number, since it uses as much as digits as its factorization.

61110499169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 61110499169 in words is "sixty-one billion, one hundred ten million, four hundred ninety-nine thousand, one hundred sixty-nine".