61046666573 has 2 divisors, whose sum is σ = 61046666574. Its totient is φ = 61046666572.

The previous prime is 61046666497. The next prime is 61046666587. The reversal of 61046666573 is 37566664016.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60800710084 + 245956489 = 246578^2 + 15683^2 .

It is a cyclic number.

It is not a de Polignac number, because 61046666573 - 2¹⁶ = 61046601037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61046266573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30523333286 + 30523333287.

It is an arithmetic number, because the mean of its divisors is an integer number (30523333287).

Almost surely, 2^61046666573 is an apocalyptic number.

It is an amenable number.

61046666573 is a deficient number, since it is larger than the sum of its proper divisors (1).

61046666573 is an equidigital number, since it uses as much as digits as its factorization.

61046666573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 61046666573 in words is "sixty-one billion, forty-six million, six hundred sixty-six thousand, five hundred seventy-three".