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768868779357 = 32738813144619
BaseRepresentation
bin10110011000001000010…
…01101000010101011101
32201111120210020212121200
423030010021220111131
5100044120401414412
61345114034150113
7106356166535550
oct13140411502535
92644523225550
10768868779357
11277091421978
12105018722339
1357672422163
14292db9b2697
15150002169dc
hexb30426855d

768868779357 has 24 divisors (see below), whose sum is σ = 1269571143360. Its totient is φ = 439240242240.

The previous prime is 768868779253. The next prime is 768868779373. The reversal of 768868779357 is 753977868867.

It is not a de Polignac number, because 768868779357 - 219 = 768868255069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768868779377) by changing a digit.

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, 1327807 + ... + 1816812.

It is an arithmetic number, because the mean of its divisors is an integer number (52898797640).

Almost surely, 2768868779357 is an apocalyptic number.

It is an amenable number.

768868779357 is a deficient number, since it is larger than the sum of its proper divisors (500702364003).

768868779357 is a wasteful number, since it uses less digits than its factorization.

768868779357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148513 (or 3148510 counting only the distinct ones).

The product of its digits is 5974456320, while the sum is 81.

The spelling of 768868779357 in words is "seven hundred sixty-eight billion, eight hundred sixty-eight million, seven hundred seventy-nine thousand, three hundred fifty-seven".

Divisors: 1 3 7 9 21 63 3881 11643 27167 34929 81501 244503 3144619 9433857 22012333 28301571 66036999 198110997 12204266339 36612799017 85429864373 109838397051 256289593119 768868779357