652804191390721 has 2 divisors, whose sum is σ = 652804191390722. Its totient is φ = 652804191390720.

The previous prime is 652804191390643. The next prime is 652804191390737. The reversal of 652804191390721 is 127093191408256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548241807310096 + 104562384080625 = 23414564^2 + 10225575^2 .

It is a cyclic number.

It is not a de Polignac number, because 652804191390721 - 2²³ = 652804183002113 is a prime.

It is not a weakly prime, because it can be changed into another prime (652804191390781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326402095695360 + 326402095695361.

It is an arithmetic number, because the mean of its divisors is an integer number (326402095695361).

It is a 1-persistent number, because it is pandigital, but 2⋅652804191390721 = 1305608382781442 is not.

Almost surely, 2^{652804191390721} is an apocalyptic number.

It is an amenable number.

652804191390721 is a deficient number, since it is larger than the sum of its proper divisors (1).

652804191390721 is an equidigital number, since it uses as much as digits as its factorization.

652804191390721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 652804191390721 in words is "six hundred fifty-two trillion, eight hundred four billion, one hundred ninety-one million, three hundred ninety thousand, seven hundred twenty-one".