61804584851593 has 2 divisors, whose sum is σ = 61804584851594. Its totient is φ = 61804584851592.

The previous prime is 61804584851587. The next prime is 61804584851627. The reversal of 61804584851593 is 39515848540816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49030622782969 + 12773962068624 = 7002187^2 + 3574068^2 .

It is a cyclic number.

It is not a de Polignac number, because 61804584851593 - 2²⁹ = 61804047980681 is a prime.

It is not a weakly prime, because it can be changed into another prime (61804584851293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30902292425796 + 30902292425797.

It is an arithmetic number, because the mean of its divisors is an integer number (30902292425797).

Almost surely, 2^{61804584851593} is an apocalyptic number.

It is an amenable number.

61804584851593 is a deficient number, since it is larger than the sum of its proper divisors (1).

61804584851593 is an equidigital number, since it uses as much as digits as its factorization.

61804584851593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888000, while the sum is 67.

The spelling of 61804584851593 in words is "sixty-one trillion, eight hundred four billion, five hundred eighty-four million, eight hundred fifty-one thousand, five hundred ninety-three".