604851287021 has 2 divisors, whose sum is σ = 604851287022. Its totient is φ = 604851287020.

The previous prime is 604851287017. The next prime is 604851287083. The reversal of 604851287021 is 120782158406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339409942921 + 265441344100 = 582589^2 + 515210^2 .

It is a cyclic number.

It is not a de Polignac number, because 604851287021 - 2² = 604851287017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604851287321) 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, 302425643510 + 302425643511.

It is an arithmetic number, because the mean of its divisors is an integer number (302425643511).

Almost surely, 2^604851287021 is an apocalyptic number.

It is an amenable number.

604851287021 is a deficient number, since it is larger than the sum of its proper divisors (1).

604851287021 is an equidigital number, since it uses as much as digits as its factorization.

604851287021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 604851287021 in words is "six hundred four billion, eight hundred fifty-one million, two hundred eighty-seven thousand, twenty-one".