617520213212 has 24 divisors (see below), whose sum is σ = 1235061490656. Its totient is φ = 264647006208.

The previous prime is 617520213199. The next prime is 617520213239. The reversal of 617520213212 is 212312025716.

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, 1883108 + ... + 2186580.

It is an arithmetic number, because the mean of its divisors is an integer number (51460895444).

Almost surely, 2^617520213212 is an apocalyptic number.

It is an amenable number.

617520213212 is an abundant number, since it is smaller than the sum of its proper divisors (617541277444).

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

617520213212 is a wasteful number, since it uses less digits than its factorization.

617520213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376157 (or 376155 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 617520213212 its reverse (212312025716), we get a palindrome (829832238928).

The spelling of 617520213212 in words is "six hundred seventeen billion, five hundred twenty million, two hundred thirteen thousand, two hundred twelve".