61160142577549 has 2 divisors, whose sum is σ = 61160142577550. Its totient is φ = 61160142577548.

The previous prime is 61160142577537. The next prime is 61160142577591. The reversal of 61160142577549 is 94577524106116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56839385856100 + 4320756721449 = 7539190^2 + 2078643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61160142577549 is a prime.

It is a super-2 number, since 2×61160142577549² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61160142577493 and 61160142577502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61160142577349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30580071288774 + 30580071288775.

It is an arithmetic number, because the mean of its divisors is an integer number (30580071288775).

Almost surely, 2^{61160142577549} is an apocalyptic number.

It is an amenable number.

61160142577549 is a deficient number, since it is larger than the sum of its proper divisors (1).

61160142577549 is an equidigital number, since it uses as much as digits as its factorization.

61160142577549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 61160142577549 in words is "sixty-one trillion, one hundred sixty billion, one hundred forty-two million, five hundred seventy-seven thousand, five hundred forty-nine".