505641646433 has 16 divisors (see below), whose sum is σ = 633710960640. Its totient is φ = 391943605200.

The previous prime is 505641646421. The next prime is 505641646439. The reversal of 505641646433 is 334646146505.

It is not a de Polignac number, because 505641646433 - 2⁴ = 505641646417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505641646439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17175803 + ... + 17205216.

It is an arithmetic number, because the mean of its divisors is an integer number (39606935040).

Almost surely, 2^505641646433 is an apocalyptic number.

It is an amenable number.

505641646433 is a deficient number, since it is larger than the sum of its proper divisors (128069314207).

505641646433 is a wasteful number, since it uses less digits than its factorization.

505641646433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34381228.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 505641646433 in words is "five hundred five billion, six hundred forty-one million, six hundred forty-six thousand, four hundred thirty-three".