61335465459109 has 2 divisors, whose sum is σ = 61335465459110. Its totient is φ = 61335465459108.

The previous prime is 61335465459071. The next prime is 61335465459113. The reversal of 61335465459109 is 90195456453316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38830071778884 + 22505393680225 = 6231378^2 + 4743985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61335465459109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61335465499109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30667732729554 + 30667732729555.

It is an arithmetic number, because the mean of its divisors is an integer number (30667732729555).

Almost surely, 2^{61335465459109} is an apocalyptic number.

It is an amenable number.

61335465459109 is a deficient number, since it is larger than the sum of its proper divisors (1).

61335465459109 is an equidigital number, since it uses as much as digits as its factorization.

61335465459109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488000, while the sum is 61.

The spelling of 61335465459109 in words is "sixty-one trillion, three hundred thirty-five billion, four hundred sixty-five million, four hundred fifty-nine thousand, one hundred nine".