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68793605648445 = 354586240376563
BaseRepresentation
bin11111010010001010000100…
…11011010111000000111101
3100000120121022122210221111210
433221011002123113000331
533004103301021222240
6402151202433435033
720330113451603436
oct1751050233270075
9300517278727453
1068793605648445
111aa13227a41077
1278707b340ba79
132c5029473b932
1412db8b1dd848d
157e472d777780
hex3e91426d703d

68793605648445 has 8 divisors (see below), whose sum is σ = 110069769037536. Its totient is φ = 36689923012496.

The previous prime is 68793605648441. The next prime is 68793605648461. The reversal of 68793605648445 is 54484650639786.

68793605648445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68793605648445 - 22 = 68793605648441 is a prime.

It is a super-2 number, since 2×687936056484452 (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68793605648441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293120188267 + ... + 2293120188296.

It is an arithmetic number, because the mean of its divisors is an integer number (13758721129692).

Almost surely, 268793605648445 is an apocalyptic number.

It is an amenable number.

68793605648445 is a deficient number, since it is larger than the sum of its proper divisors (41276163389091).

68793605648445 is a wasteful number, since it uses less digits than its factorization.

68793605648445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586240376571.

The product of its (nonzero) digits is 4180377600, while the sum is 75.

The spelling of 68793605648445 in words is "sixty-eight trillion, seven hundred ninety-three billion, six hundred five million, six hundred forty-eight thousand, four hundred forty-five".

Divisors: 1 3 5 15 4586240376563 13758721129689 22931201882815 68793605648445