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268130918880 = 253251131546047
BaseRepresentation
bin1111100110110111011…
…0010010000111100000
3221122002111121222002100
43321231312102013200
513343113003401010
6323102212050400
725241351130366
oct3715566220740
9848074558070
10268130918880
11a3793a05a30
1243b70603a00
131c39146a266
14cd9879b636
156e949332c0
hex3e6dd921e0

268130918880 has 288 divisors, whose sum is σ = 1030379470848. Its totient is φ = 62904499200.

The previous prime is 268130918863. The next prime is 268130918899. The reversal of 268130918880 is 88819031862.

268130918880 is a `hidden beast` number, since 2 + 6 + 81 + 309 + 188 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218017 + ... + 764063.

It is an arithmetic number, because the mean of its divisors is an integer number (3577706496).

Almost surely, 2268130918880 is an apocalyptic number.

268130918880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268130918880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515189735424).

268130918880 is an abundant number, since it is smaller than the sum of its proper divisors (762248551968).

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

268130918880 is a wasteful number, since it uses less digits than its factorization.

268130918880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546110 (or 546099 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 268130918880 in words is "two hundred sixty-eight billion, one hundred thirty million, nine hundred eighteen thousand, eight hundred eighty".