61183305349 has 2 divisors, whose sum is σ = 61183305350. Its totient is φ = 61183305348.

The previous prime is 61183305343. The next prime is 61183305361. The reversal of 61183305349 is 94350338116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61098941124 + 84364225 = 247182^2 + 9185^2 .

It is a cyclic number.

It is not a de Polignac number, because 61183305349 - 2⁵ = 61183305317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61183305343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30591652674 + 30591652675.

It is an arithmetic number, because the mean of its divisors is an integer number (30591652675).

Almost surely, 2^61183305349 is an apocalyptic number.

It is an amenable number.

61183305349 is a deficient number, since it is larger than the sum of its proper divisors (1).

61183305349 is an equidigital number, since it uses as much as digits as its factorization.

61183305349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 61183305349 in words is "sixty-one billion, one hundred eighty-three million, three hundred five thousand, three hundred forty-nine".