505505966431 has 4 divisors (see below), whose sum is σ = 505510415200. Its totient is φ = 505501517664.

The previous prime is 505505966389. The next prime is 505505966437. The reversal of 505505966431 is 134669505505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505505966431 - 2²¹ = 505503869279 is a prime.

It is a super-2 number, since 2×505505966431² (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 (505505966437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049351 + ... + 2282728.

It is an arithmetic number, because the mean of its divisors is an integer number (126377603800).

Almost surely, 2^505505966431 is an apocalyptic number.

505505966431 is a deficient number, since it is larger than the sum of its proper divisors (4448769).

505505966431 is a wasteful number, since it uses less digits than its factorization.

505505966431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448768.

The product of its (nonzero) digits is 2430000, while the sum is 49.

The spelling of 505505966431 in words is "five hundred five billion, five hundred five million, nine hundred sixty-six thousand, four hundred thirty-one".