505664072947 has 8 divisors (see below), whose sum is σ = 552350882160. Its totient is φ = 459096821760.

The previous prime is 505664072873. The next prime is 505664072981. The reversal of 505664072947 is 749270466505.

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 505664072947 - 2⁷ = 505664072819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505664073947) 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, 29880658 + ... + 29897575.

It is an arithmetic number, because the mean of its divisors is an integer number (69043860270).

Almost surely, 2^505664072947 is an apocalyptic number.

505664072947 is a deficient number, since it is larger than the sum of its proper divisors (46686809213).

505664072947 is a wasteful number, since it uses less digits than its factorization.

505664072947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59779013.

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 505664072947 in words is "five hundred five billion, six hundred sixty-four million, seventy-two thousand, nine hundred forty-seven".