505135367261 has 8 divisors (see below), whose sum is σ = 611256242880. Its totient is φ = 407504161728.

The previous prime is 505135367249. The next prime is 505135367273. The reversal of 505135367261 is 162763531505.

It is an interprime number because it is at equal distance from previous prime (505135367249) and next prime (505135367273).

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

It is a cyclic number.

It is not a de Polignac number, because 505135367261 - 2¹⁴ = 505135350877 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 (505135367201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122417391 + ... + 2122417628.

It is an arithmetic number, because the mean of its divisors is an integer number (76407030360).

Almost surely, 2^505135367261 is an apocalyptic number.

It is an amenable number.

505135367261 is a deficient number, since it is larger than the sum of its proper divisors (106120875619).

505135367261 is a wasteful number, since it uses less digits than its factorization.

505135367261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244835043.

The product of its (nonzero) digits is 567000, while the sum is 44.

Adding to 505135367261 its reverse (162763531505), we get a palindrome (667898898766).

The spelling of 505135367261 in words is "five hundred five billion, one hundred thirty-five million, three hundred sixty-seven thousand, two hundred sixty-one".