504364321645 has 4 divisors (see below), whose sum is σ = 605237185980. Its totient is φ = 403491457312.

The previous prime is 504364321583. The next prime is 504364321667. The reversal of 504364321645 is 546123463405.

It is a happy number.

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 339361007209 + 165003314436 = 582547^2 + 406206^2 .

It is a cyclic number.

It is not a de Polignac number, because 504364321645 - 2²¹ = 504362224493 is a prime.

It is a super-3 number, since 3×504364321645³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50436432160 + ... + 50436432169.

It is an arithmetic number, because the mean of its divisors is an integer number (151309296495).

Almost surely, 2^504364321645 is an apocalyptic number.

It is an amenable number.

504364321645 is a deficient number, since it is larger than the sum of its proper divisors (100872864335).

504364321645 is a wasteful number, since it uses less digits than its factorization.

504364321645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100872864334.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 504364321645 in words is "five hundred four billion, three hundred sixty-four million, three hundred twenty-one thousand, six hundred forty-five".