61048845761 has 2 divisors, whose sum is σ = 61048845762. Its totient is φ = 61048845760.

The previous prime is 61048845751. The next prime is 61048845773. The reversal of 61048845761 is 16754884016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55740849025 + 5307996736 = 236095^2 + 72856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61048845761 is a prime.

It is not a weakly prime, because it can be changed into another prime (61048845701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30524422880 + 30524422881.

It is an arithmetic number, because the mean of its divisors is an integer number (30524422881).

Almost surely, 2^61048845761 is an apocalyptic number.

It is an amenable number.

61048845761 is a deficient number, since it is larger than the sum of its proper divisors (1).

61048845761 is an equidigital number, since it uses as much as digits as its factorization.

61048845761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 61048845761 in words is "sixty-one billion, forty-eight million, eight hundred forty-five thousand, seven hundred sixty-one".