604374217561 has 2 divisors, whose sum is σ = 604374217562. Its totient is φ = 604374217560.

The previous prime is 604374217481. The next prime is 604374217619. The reversal of 604374217561 is 165712473406.

604374217561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604321219161 + 52998400 = 777381^2 + 7280^2 .

It is a cyclic number.

It is not a de Polignac number, because 604374217561 - 2¹¹ = 604374215513 is a prime.

It is not a weakly prime, because it can be changed into another prime (604374217261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302187108780 + 302187108781.

It is an arithmetic number, because the mean of its divisors is an integer number (302187108781).

Almost surely, 2^604374217561 is an apocalyptic number.

It is an amenable number.

604374217561 is a deficient number, since it is larger than the sum of its proper divisors (1).

604374217561 is an equidigital number, since it uses as much as digits as its factorization.

604374217561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 604374217561 in words is "six hundred four billion, three hundred seventy-four million, two hundred seventeen thousand, five hundred sixty-one".