505243632887 has 8 divisors (see below), whose sum is σ = 579057051936. Its totient is φ = 431839153152.

The previous prime is 505243632853. The next prime is 505243632911. The reversal of 505243632887 is 788236342505.

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 505243632887 - 2⁶ = 505243632823 is a prime.

It is a super-2 number, since 2×505243632887² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505243662887) 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, 102232178 + ... + 102237119.

It is an arithmetic number, because the mean of its divisors is an integer number (72382131492).

Almost surely, 2^505243632887 is an apocalyptic number.

505243632887 is a deficient number, since it is larger than the sum of its proper divisors (73813419049).

505243632887 is a wasteful number, since it uses less digits than its factorization.

505243632887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204469657.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 505243632887 in words is "five hundred five billion, two hundred forty-three million, six hundred thirty-two thousand, eight hundred eighty-seven".