505260571266221 has 16 divisors (see below), whose sum is σ = 511547467723776. Its totient is φ = 499003189989936.

The previous prime is 505260571266193. The next prime is 505260571266233. The reversal of 505260571266221 is 122662175062505.

It is a cyclic number.

It is not a de Polignac number, because 505260571266221 - 2²² = 505260567071917 is a prime.

It is a super-3 number, since 3×505260571266221³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505260571266221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505260571266251) 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, 198750860 + ... + 201276986.

It is an arithmetic number, because the mean of its divisors is an integer number (31971716732736).

Almost surely, 2^{505260571266221} is an apocalyptic number.

It is an amenable number.

505260571266221 is a deficient number, since it is larger than the sum of its proper divisors (6286896457555).

505260571266221 is a wasteful number, since it uses less digits than its factorization.

505260571266221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531968.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 505260571266221 in words is "five hundred five trillion, two hundred sixty billion, five hundred seventy-one million, two hundred sixty-six thousand, two hundred twenty-one".