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68802357830 = 2510764301269
BaseRepresentation
bin100000000010011110…
…0001010101001000110
320120120221202220200012
41000010330022221012
52111401400422310
651335105150222
74653662251343
oct1000474125106
9216527686605
1068802357830
11271a7156858
121140192b372
13664629a44b
14348993b7ca
151bca3ddc05
hex1004f0aa46

68802357830 has 16 divisors (see below), whose sum is σ = 125001668880. Its totient is φ = 27263737632.

The previous prime is 68802357829. The next prime is 68802357839. The reversal of 68802357830 is 3875320886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68802357839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32149565 + ... + 32151704.

It is an arithmetic number, because the mean of its divisors is an integer number (7812604305).

Almost surely, 268802357830 is an apocalyptic number.

68802357830 is a deficient number, since it is larger than the sum of its proper divisors (56199311050).

68802357830 is a wasteful number, since it uses less digits than its factorization.

68802357830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64301383.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 68802357830 in words is "sixty-eight billion, eight hundred two million, three hundred fifty-seven thousand, eight hundred thirty".

Divisors: 1 2 5 10 107 214 535 1070 64301269 128602538 321506345 643012690 6880235783 13760471566 34401178915 68802357830