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88018720812 = 223211659337283
BaseRepresentation
bin101000111111001010…
…0110001100000101100
322102012011202022000200
41101332110301200230
52420230243031222
6104234002353500
76234120532251
oct1217624614054
9272164668020
1088018720812
1134368300780
121508535b890
1383b9501029
14438db17428
152452465eac
hex147e53182c

88018720812 has 72 divisors (see below), whose sum is σ = 243087324480. Its totient is φ = 26631786720.

The previous prime is 88018720709. The next prime is 88018720831. The reversal of 88018720812 is 21802781088.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92323 + ... + 429605.

It is an arithmetic number, because the mean of its divisors is an integer number (3376212840).

Almost surely, 288018720812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88018720812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121543662240).

88018720812 is an abundant number, since it is smaller than the sum of its proper divisors (155068603668).

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

88018720812 is a wasteful number, since it uses less digits than its factorization.

88018720812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337963 (or 337958 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The spelling of 88018720812 in words is "eighty-eight billion, eighteen million, seven hundred twenty thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 132 198 396 659 1318 1977 2636 3954 5931 7249 7908 11862 14498 21747 23724 28996 43494 65241 86988 130482 260964 337283 674566 1011849 1349132 2023698 3035547 3710113 4047396 6071094 7420226 11130339 12142188 14840452 22260678 33391017 44521356 66782034 133564068 222269497 444538994 666808491 889077988 1333616982 2000425473 2444964467 2667233964 4000850946 4889928934 7334893401 8001701892 9779857868 14669786802 22004680203 29339573604 44009360406 88018720812