2148585630721 has 2 divisors, whose sum is σ = 2148585630722. Its totient is φ = 2148585630720.

The previous prime is 2148585630671. The next prime is 2148585630767. The reversal of 2148585630721 is 1270365858412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2146459406400 + 2126224321 = 1465080^2 + 46111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148585630721 - 2⁹ = 2148585630209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2148585630791) 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, 1074292815360 + 1074292815361.

It is an arithmetic number, because the mean of its divisors is an integer number (1074292815361).

Almost surely, 2^{2148585630721} is an apocalyptic number.

It is an amenable number.

2148585630721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148585630721 is an equidigital number, since it uses as much as digits as its factorization.

2148585630721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 2148585630721 in words is "two trillion, one hundred forty-eight billion, five hundred eighty-five million, six hundred thirty thousand, seven hundred twenty-one".