61149848017 has 2 divisors, whose sum is σ = 61149848018. Its totient is φ = 61149848016.

The previous prime is 61149848009. The next prime is 61149848041. The reversal of 61149848017 is 71084894116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44392804416 + 16757043601 = 210696^2 + 129449^2 .

It is a cyclic number.

It is not a de Polignac number, because 61149848017 - 2³ = 61149848009 is a prime.

It is not a weakly prime, because it can be changed into another prime (61149848917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30574924008 + 30574924009.

It is an arithmetic number, because the mean of its divisors is an integer number (30574924009).

Almost surely, 2^61149848017 is an apocalyptic number.

It is an amenable number.

61149848017 is a deficient number, since it is larger than the sum of its proper divisors (1).

61149848017 is an equidigital number, since it uses as much as digits as its factorization.

61149848017 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 61149848017 in words is "sixty-one billion, one hundred forty-nine million, eight hundred forty-eight thousand, seventeen".