505944490845 has 8 divisors (see below), whose sum is σ = 809511185376. Its totient is φ = 269837061776.

The previous prime is 505944490823. The next prime is 505944490867. The reversal of 505944490845 is 548094449505.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (505944490823) and next prime (505944490867).

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 505944490845 - 2⁵ = 505944490813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16864816347 + ... + 16864816376.

It is an arithmetic number, because the mean of its divisors is an integer number (101188898172).

Almost surely, 2^505944490845 is an apocalyptic number.

It is an amenable number.

505944490845 is a deficient number, since it is larger than the sum of its proper divisors (303566694531).

505944490845 is a wasteful number, since it uses less digits than its factorization.

505944490845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33729632731.

The product of its (nonzero) digits is 20736000, while the sum is 57.

The spelling of 505944490845 in words is "five hundred five billion, nine hundred forty-four million, four hundred ninety thousand, eight hundred forty-five".