505240631243 has 8 divisors (see below), whose sum is σ = 514152898896. Its totient is φ = 496395626400.

The previous prime is 505240631219. The next prime is 505240631293. The reversal of 505240631243 is 342136042505.

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 505240631243 - 2⁶ = 505240631179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505240631293) 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, 16800548 + ... + 16830593.

It is an arithmetic number, because the mean of its divisors is an integer number (64269112362).

Almost surely, 2^505240631243 is an apocalyptic number.

505240631243 is a deficient number, since it is larger than the sum of its proper divisors (8912267653).

505240631243 is a wasteful number, since it uses less digits than its factorization.

505240631243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33631405.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 505240631243 its reverse (342136042505), we get a palindrome (847376673748).

The spelling of 505240631243 in words is "five hundred five billion, two hundred forty million, six hundred thirty-one thousand, two hundred forty-three".