61447350353 has 2 divisors, whose sum is σ = 61447350354. Its totient is φ = 61447350352.

The previous prime is 61447350343. The next prime is 61447350359. The reversal of 61447350353 is 35305374416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34227960064 + 27219390289 = 185008^2 + 164983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61447350353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61447350353.

It is not a weakly prime, because it can be changed into another prime (61447350359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30723675176 + 30723675177.

It is an arithmetic number, because the mean of its divisors is an integer number (30723675177).

Almost surely, 2^61447350353 is an apocalyptic number.

It is an amenable number.

61447350353 is a deficient number, since it is larger than the sum of its proper divisors (1).

61447350353 is an equidigital number, since it uses as much as digits as its factorization.

61447350353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 41.

The spelling of 61447350353 in words is "sixty-one billion, four hundred forty-seven million, three hundred fifty thousand, three hundred fifty-three".