505544640263 has 8 divisors (see below), whose sum is σ = 544479390000. Its totient is φ = 466616562048.

The previous prime is 505544640199. The next prime is 505544640329. The reversal of 505544640263 is 362046445505.

It is a happy number.

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

It is not a de Polignac number, because 505544640263 - 2⁶ = 505544640199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505544640163) 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, 1509938 + ... + 1814111.

It is an arithmetic number, because the mean of its divisors is an integer number (68059923750).

Almost surely, 2^505544640263 is an apocalyptic number.

505544640263 is a deficient number, since it is larger than the sum of its proper divisors (38934749737).

505544640263 is a wasteful number, since it uses less digits than its factorization.

505544640263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335761.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 505544640263 in words is "five hundred five billion, five hundred forty-four million, six hundred forty thousand, two hundred sixty-three".