505363634441 has 8 divisors (see below), whose sum is σ = 510455805768. Its totient is φ = 500273200000.

The previous prime is 505363634407. The next prime is 505363634443. The reversal of 505363634441 is 144436363505.

It can be written as a sum of positive squares in 4 ways, for example, as 358537488400 + 146826146041 = 598780^2 + 383179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-505363634441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505363634392 and 505363634401.

It is not an unprimeable number, because it can be changed into a prime (505363634443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154631 + ... + 1017171.

It is an arithmetic number, because the mean of its divisors is an integer number (63806975721).

Almost surely, 2^505363634441 is an apocalyptic number.

It is an amenable number.

505363634441 is a deficient number, since it is larger than the sum of its proper divisors (5092171327).

505363634441 is a wasteful number, since it uses less digits than its factorization.

505363634441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868443.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 505363634441 its reverse (144436363505), we get a palindrome (649799997946).

The spelling of 505363634441 in words is "five hundred five billion, three hundred sixty-three million, six hundred thirty-four thousand, four hundred forty-one".