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68763188875 = 5310717412953
BaseRepresentation
bin100000000001010011…
…0101111111010001011
320120111020001220222011
41000002212233322023
52111311334021000
651331145440351
74653005314213
oct1000246577213
9216436056864
1068763188875
1127187033617
12113b07a00b7
13663b134c54
143484663243
151bc6c532ba
hex10029afe8b

68763188875 has 32 divisors (see below), whose sum is σ = 86697584064. Its totient is φ = 54446688000.

The previous prime is 68763188867. The next prime is 68763188881. The reversal of 68763188875 is 57888136786.

It is not a de Polignac number, because 68763188875 - 23 = 68763188867 is a prime.

It is a super-2 number, since 2×687631888752 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68763188875.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23284399 + ... + 23287351.

It is an arithmetic number, because the mean of its divisors is an integer number (2709299502).

Almost surely, 268763188875 is an apocalyptic number.

68763188875 is a deficient number, since it is larger than the sum of its proper divisors (17934395189).

68763188875 is a wasteful number, since it uses less digits than its factorization.

68763188875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816 (or 4806 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 67.

The spelling of 68763188875 in words is "sixty-eight billion, seven hundred sixty-three million, one hundred eighty-eight thousand, eight hundred seventy-five".

Divisors: 1 5 25 107 125 535 1741 2675 2953 8705 13375 14765 43525 73825 186287 217625 315971 369125 931435 1579855 4657175 5141173 7899275 23285875 25705865 39496375 128529325 550105511 642646625 2750527555 13752637775 68763188875