61422017143549 has 2 divisors, whose sum is σ = 61422017143550. Its totient is φ = 61422017143548.

The previous prime is 61422017143483. The next prime is 61422017143559. The reversal of 61422017143549 is 94534171022416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34086038805625 + 27335978337924 = 5838325^2 + 5228382^2 .

It is a cyclic number.

It is not a de Polignac number, because 61422017143549 - 2⁹ = 61422017143037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61422017143559) 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, 30711008571774 + 30711008571775.

It is an arithmetic number, because the mean of its divisors is an integer number (30711008571775).

Almost surely, 2^{61422017143549} is an apocalyptic number.

It is an amenable number.

61422017143549 is a deficient number, since it is larger than the sum of its proper divisors (1).

61422017143549 is an equidigital number, since it uses as much as digits as its factorization.

61422017143549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 61422017143549 in words is "sixty-one trillion, four hundred twenty-two billion, seventeen million, one hundred forty-three thousand, five hundred forty-nine".