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68276481756 = 2237812815259
BaseRepresentation
bin111111100101100110…
…000110111011011100
320112020022020122022120
4333211212012323130
52104312234404011
651211001542540
74634645343060
oct774546067334
9215208218276
1068276481756
1126a5732632a
12112957a4a50
136591355482
143439b6baa0
151b99163a06
hexfe5986edc

68276481756 has 24 divisors (see below), whose sum is σ = 182070618240. Its totient is φ = 19507566192.

The previous prime is 68276481737. The next prime is 68276481821. The reversal of 68276481756 is 65718467286.

It is a self number, because there is not a number n which added to its sum of digits gives 68276481756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406407546 + ... + 406407713.

It is an arithmetic number, because the mean of its divisors is an integer number (7586275760).

Almost surely, 268276481756 is an apocalyptic number.

It is an amenable number.

68276481756 is an abundant number, since it is smaller than the sum of its proper divisors (113794136484).

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

68276481756 is a wasteful number, since it uses less digits than its factorization.

68276481756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812815273 (or 812815271 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The spelling of 68276481756 in words is "sixty-eight billion, two hundred seventy-six million, four hundred eighty-one thousand, seven hundred fifty-six".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 812815259 1625630518 2438445777 3251261036 4876891554 5689706813 9753783108 11379413626 17069120439 22758827252 34138240878 68276481756