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68824131752 = 2315156973619
BaseRepresentation
bin100000000011000111…
…1001110100010101000
320120122110202010212202
41000012033032202220
52111422434204002
651341203555332
74654345316225
oct1000617164250
9216573663782
1068824131752
1127208478932
121140908bb48
13664a95211c
14348c7a894c
151bcc290502
hex10063ce8a8

68824131752 has 16 divisors (see below), whose sum is σ = 129899853600. Its totient is φ = 34184170800.

The previous prime is 68824131751. The next prime is 68824131757. The reversal of 68824131752 is 25713142886.

It is a super-2 number, since 2×688241317522 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68824131697 and 68824131706.

It is not an unprimeable number, because it can be changed into a prime (68824131751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28485602 + ... + 28488017.

It is an arithmetic number, because the mean of its divisors is an integer number (8118740850).

Almost surely, 268824131752 is an apocalyptic number.

It is an amenable number.

68824131752 is a deficient number, since it is larger than the sum of its proper divisors (61075721848).

68824131752 is a wasteful number, since it uses less digits than its factorization.

68824131752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56973776 (or 56973772 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The spelling of 68824131752 in words is "sixty-eight billion, eight hundred twenty-four million, one hundred thirty-one thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 151 302 604 1208 56973619 113947238 227894476 455788952 8603016469 17206032938 34412065876 68824131752