504264661645 has 4 divisors (see below), whose sum is σ = 605117593980. Its totient is φ = 403411729312.

The previous prime is 504264661627. The next prime is 504264661651. The reversal of 504264661645 is 546166462405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 353432628004 + 150832033641 = 594502^2 + 388371^2 .

It is a cyclic number.

It is not a de Polignac number, because 504264661645 - 2¹¹ = 504264659597 is a prime.

It is a super-3 number, since 3×504264661645³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50426466160 + ... + 50426466169.

It is an arithmetic number, because the mean of its divisors is an integer number (151279398495).

Almost surely, 2^504264661645 is an apocalyptic number.

It is an amenable number.

504264661645 is a deficient number, since it is larger than the sum of its proper divisors (100852932335).

504264661645 is a wasteful number, since it uses less digits than its factorization.

504264661645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100852932334.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 504264661645 in words is "five hundred four billion, two hundred sixty-four million, six hundred sixty-one thousand, six hundred forty-five".