Search a number
-
+
68055381982 = 27121312893109
BaseRepresentation
bin111111011000011010…
…101011011111011110
320111122220012121110001
4333120122223133132
52103334134210412
651133023004514
74626322126240
oct773032533736
9214586177401
1068055381982
1126953541845
121123373973a
1365575c12c3
143418656090
151b84a3c957
hexfd86ab7de

68055381982 has 32 divisors (see below), whose sum is σ = 116890718400. Its totient is φ = 29110572288.

The previous prime is 68055381967. The next prime is 68055381991. The reversal of 68055381982 is 28918355086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21888244 + ... + 21891352.

It is an arithmetic number, because the mean of its divisors is an integer number (3652834950).

Almost surely, 268055381982 is an apocalyptic number.

68055381982 is a deficient number, since it is larger than the sum of its proper divisors (48835336418).

68055381982 is a wasteful number, since it uses less digits than its factorization.

68055381982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 68055381982 in words is "sixty-eight billion, fifty-five million, three hundred eighty-one thousand, nine hundred eighty-two".

Divisors: 1 2 7 14 1213 1289 2426 2578 3109 6218 8491 9023 16982 18046 21763 43526 1563557 3127114 3771217 4007501 7542434 8015002 10944899 21889798 26398519 28052507 52797038 56105014 4861098713 9722197426 34027690991 68055381982