505365435643 has 4 divisors (see below), whose sum is σ = 505384577920. Its totient is φ = 505346293368.

The previous prime is 505365435623. The next prime is 505365435667. The reversal of 505365435643 is 346534563505.

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 505365435643 - 2¹³ = 505365427451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505365435623) 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, 9531483 + ... + 9584356.

It is an arithmetic number, because the mean of its divisors is an integer number (126346144480).

Almost surely, 2^505365435643 is an apocalyptic number.

505365435643 is a deficient number, since it is larger than the sum of its proper divisors (19142277).

505365435643 is a wasteful number, since it uses less digits than its factorization.

505365435643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19142276.

The product of its (nonzero) digits is 9720000, while the sum is 49.

The spelling of 505365435643 in words is "five hundred five billion, three hundred sixty-five million, four hundred thirty-five thousand, six hundred forty-three".