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11215102160 = 245140188777
BaseRepresentation
bin10100111000111100…
…01110000011010000
31001221121012012221002
422130132032003100
5140432031232120
65052510321132
7544630536563
oct123436160320
931847165832
1011215102160
1148356a6279
12220bab91a8
13109966b932
147856a44da
154598cd375
hex29c78e0d0

11215102160 has 20 divisors (see below), whose sum is σ = 26075112708. Its totient is φ = 4486040832.

The previous prime is 11215102141. The next prime is 11215102187. The reversal of 11215102160 is 6120151211.

It can be written as a sum of positive squares in 2 ways, for example, as 5786949184 + 5428152976 = 76072^2 + 73676^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 70094309 + ... + 70094468.

Almost surely, 211215102160 is an apocalyptic number.

11215102160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215102160 is an abundant number, since it is smaller than the sum of its proper divisors (14860010548).

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

11215102160 is a wasteful number, since it uses less digits than its factorization.

11215102160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140188790 (or 140188784 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 11215102160 its reverse (6120151211), we get a palindrome (17335253371).

The spelling of 11215102160 in words is "eleven billion, two hundred fifteen million, one hundred two thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 140188777 280377554 560755108 700943885 1121510216 1401887770 2243020432 2803775540 5607551080 11215102160