504246630400661 has 4 divisors (see below), whose sum is σ = 504254841744300. Its totient is φ = 504238419057024.

The previous prime is 504246630400651. The next prime is 504246630400697. The reversal of 504246630400661 is 166004036642405.

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 488631290260036 + 15615340140625 = 22105006^2 + 3951625^2 .

It is a cyclic number.

It is not a de Polignac number, because 504246630400661 - 2²² = 504246626206357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504246630400651) 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, 4105579706 + ... + 4105702523.

It is an arithmetic number, because the mean of its divisors is an integer number (126063710436075).

Almost surely, 2^{504246630400661} is an apocalyptic number.

It is an amenable number.

504246630400661 is a deficient number, since it is larger than the sum of its proper divisors (8211343639).

504246630400661 is an equidigital number, since it uses as much as digits as its factorization.

504246630400661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211343638.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 504246630400661 in words is "five hundred four trillion, two hundred forty-six billion, six hundred thirty million, four hundred thousand, six hundred sixty-one".