61445005417 has 2 divisors, whose sum is σ = 61445005418. Its totient is φ = 61445005416.

The previous prime is 61445005399. The next prime is 61445005459. The reversal of 61445005417 is 71450054416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36490168576 + 24954836841 = 191024^2 + 157971^2 .

It is a cyclic number.

It is not a de Polignac number, because 61445005417 - 2¹¹ = 61445003369 is a prime.

It is not a weakly prime, because it can be changed into another prime (61445005477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30722502708 + 30722502709.

It is an arithmetic number, because the mean of its divisors is an integer number (30722502709).

Almost surely, 2^61445005417 is an apocalyptic number.

It is an amenable number.

61445005417 is a deficient number, since it is larger than the sum of its proper divisors (1).

61445005417 is an equidigital number, since it uses as much as digits as its factorization.

61445005417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 61445005417 in words is "sixty-one billion, four hundred forty-five million, five thousand, four hundred seventeen".