505353361021 has 8 divisors (see below), whose sum is σ = 511971574784. Its totient is φ = 498776382720.

The previous prime is 505353360997. The next prime is 505353361027. The reversal of 505353361021 is 120163353505.

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 505353361021 - 2⁷ = 505353360893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505353361027) 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, 10284195 + ... + 10333216.

It is an arithmetic number, because the mean of its divisors is an integer number (63996446848).

Almost surely, 2^505353361021 is an apocalyptic number.

It is an amenable number.

505353361021 is a deficient number, since it is larger than the sum of its proper divisors (6618213763).

505353361021 is a wasteful number, since it uses less digits than its factorization.

505353361021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20617731.

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 505353361021 in words is "five hundred five billion, three hundred fifty-three million, three hundred sixty-one thousand, twenty-one".