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68818750383 = 3199325794463
BaseRepresentation
bin100000000010111101…
…0101100101110101111
320120122002121202000210
41000011322230232233
52111420100003013
651340452353503
74654251504135
oct1000572545657
9216562552023
1068818750383
1127205432819
1211407315893
1366497b9896
14348bba7755
151bcba7acc3
hex1005eacbaf

68818750383 has 16 divisors (see below), whose sum is σ = 91860549120. Its totient is φ = 45828095424.

The previous prime is 68818750331. The next prime is 68818750433. The reversal of 68818750383 is 38305781886.

It is not a de Polignac number, because 68818750383 - 213 = 68818742191 is a prime.

It is a super-3 number, since 3×688187503833 (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68818750313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15417610 + ... + 15422072.

It is an arithmetic number, because the mean of its divisors is an integer number (5741284320).

Almost surely, 268818750383 is an apocalyptic number.

68818750383 is a deficient number, since it is larger than the sum of its proper divisors (23041798737).

68818750383 is a wasteful number, since it uses less digits than its factorization.

68818750383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9038.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 68818750383 in words is "sixty-eight billion, eight hundred eighteen million, seven hundred fifty thousand, three hundred eighty-three".

Divisors: 1 3 1993 2579 4463 5979 7737 13389 5139947 8894759 11510077 15419841 26684277 34530231 22939583461 68818750383