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6688888888899 = 37318518518519
BaseRepresentation
bin110000101010110000011…
…0110001001111001000011
3212200110012011112000121210
41201111200312021321003
51334042321023421044
622120455542421203
71260153621311610
oct141254066117103
925613164460553
106688888888899
1121498184428a8
12900427431803
133969b486b389
14191a5b57d507
15b8ed78541b9
hex61560d89e43

6688888888899 has 8 divisors (see below), whose sum is σ = 10192592592640. Its totient is φ = 3822222222216.

The previous prime is 6688888888883. The next prime is 6688888888901. The reversal of 6688888888899 is 9988888888866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6688888888899 - 24 = 6688888888883 is a prime.

It is a super-3 number, since 3×66888888888993 (a number of 39 digits) contains 333 as substring.

6688888888899 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6688888888399) 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 7 ways as a sum of consecutive naturals, for example, 159259259239 + ... + 159259259280.

It is an arithmetic number, because the mean of its divisors is an integer number (1274074074080).

Almost surely, 26688888888899 is an apocalyptic number.

6688888888899 is a deficient number, since it is larger than the sum of its proper divisors (3503703703741).

6688888888899 is a wasteful number, since it uses less digits than its factorization.

6688888888899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318518518529.

The product of its digits is 391378894848, while the sum is 102.

The spelling of 6688888888899 in words is "six trillion, six hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-nine".

Divisors: 1 3 7 21 318518518519 955555555557 2229629629633 6688888888899