504364321649 has 4 divisors (see below), whose sum is σ = 504368890020. Its totient is φ = 504359753280.

The previous prime is 504364321583. The next prime is 504364321667. The reversal of 504364321649 is 946123463405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946123463405 = 5 ⋅189224692681.

It can be written as a sum of positive squares in 2 ways, for example, as 267066736225 + 237297585424 = 516785^2 + 487132^2 .

It is a cyclic number.

It is not a de Polignac number, because 504364321649 - 2¹⁶ = 504364256113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504364351649) 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 in 3 ways as a sum of consecutive naturals, for example, 2114372 + ... + 2340789.

It is an arithmetic number, because the mean of its divisors is an integer number (126092222505).

Almost surely, 2^504364321649 is an apocalyptic number.

It is an amenable number.

504364321649 is a deficient number, since it is larger than the sum of its proper divisors (4568371).

504364321649 is a wasteful number, since it uses less digits than its factorization.

504364321649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568370.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 504364321649 in words is "five hundred four billion, three hundred sixty-four million, three hundred twenty-one thousand, six hundred forty-nine".