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11661223231252 = 227416472258259
BaseRepresentation
bin1010100110110001011100…
…0100010111111100010100
31112021210122200211010101001
42221230113010113330110
53012024141121400002
640445031512113044
72312331661002040
oct251542704277424
945253580733331
1011661223231252
113796551563291
121384034095784
13667858077cca
142c4598929020
15153506353a87
hexa9b17117f14

11661223231252 has 12 divisors (see below), whose sum is σ = 23322446462560. Its totient is φ = 4997667099096.

The previous prime is 11661223231249. The next prime is 11661223231289. The reversal of 11661223231252 is 25213232216611.

It is a happy number.

11661223231252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

11661223231252 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208236129102 + ... + 208236129157.

Almost surely, 211661223231252 is an apocalyptic number.

It is an amenable number.

11661223231252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11661223231252 is a wasteful number, since it uses less digits than its factorization.

11661223231252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416472258270 (or 416472258268 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

Adding to 11661223231252 its reverse (25213232216611), we get a palindrome (36874455447863).

The spelling of 11661223231252 in words is "eleven trillion, six hundred sixty-one billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 416472258259 832944516518 1665889033036 2915305807813 5830611615626 11661223231252