505205268220 has 48 divisors (see below), whose sum is σ = 1088000419968. Its totient is φ = 196961725440.

The previous prime is 505205268199. The next prime is 505205268287. The reversal of 505205268220 is 22862502505.

It is a self number, because there is not a number n which added to its sum of digits gives 505205268220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888507 + ... + 1341586.

It is an arithmetic number, because the mean of its divisors is an integer number (22666675416).

Almost surely, 2^505205268220 is an apocalyptic number.

It is an amenable number.

505205268220 is an abundant number, since it is smaller than the sum of its proper divisors (582795151748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505205268220 is a wasteful number, since it uses less digits than its factorization.

505205268220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230390 (or 2230388 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 505205268220 in words is "five hundred five billion, two hundred five million, two hundred sixty-eight thousand, two hundred twenty".