504768494721 has 4 divisors (see below), whose sum is σ = 673024659632. Its totient is φ = 336512329812.

The previous prime is 504768494717. The next prime is 504768494753. The reversal of 504768494721 is 127494867405.

504768494721 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 504768494721 - 2² = 504768494717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (504768494221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84128082451 + ... + 84128082456.

It is an arithmetic number, because the mean of its divisors is an integer number (168256164908).

Almost surely, 2^504768494721 is an apocalyptic number.

It is an amenable number.

504768494721 is a deficient number, since it is larger than the sum of its proper divisors (168256164911).

504768494721 is a wasteful number, since it uses less digits than its factorization.

504768494721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168256164910.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 504768494721 in words is "five hundred four billion, seven hundred sixty-eight million, four hundred ninety-four thousand, seven hundred twenty-one".