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68327307577 = 1941304128843
BaseRepresentation
bin111111101000100111…
…111111100100111001
320112100211212212020101
4333220213333210321
52104413242320302
651220015155401
74636133350234
oct775047774471
9215324785211
1068327307577
1126a82a90541
12112aa815b61
13659ba3c719
1434427dc41b
151b9d853287
hexfe89ff939

68327307577 has 16 divisors (see below), whose sum is σ = 73704496320. Its totient is φ = 63129369600.

The previous prime is 68327307553. The next prime is 68327307589. The reversal of 68327307577 is 77570372386.

It is a de Polignac number, because none of the positive numbers 2k-68327307577 is a prime.

It is a super-2 number, since 2×683273075772 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68327307977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2354518 + ... + 2383360.

It is an arithmetic number, because the mean of its divisors is an integer number (4606531020).

Almost surely, 268327307577 is an apocalyptic number.

It is an amenable number.

68327307577 is a deficient number, since it is larger than the sum of its proper divisors (5377188743).

68327307577 is a wasteful number, since it uses less digits than its factorization.

68327307577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31944.

The product of its (nonzero) digits is 10372320, while the sum is 55.

The spelling of 68327307577 in words is "sixty-eight billion, three hundred twenty-seven million, three hundred seven thousand, five hundred seventy-seven".

Divisors: 1 19 41 779 3041 28843 57779 124681 548017 1182563 2368939 22468697 87711563 1666519697 3596174083 68327307577