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6887384628047 = 711189194727869
BaseRepresentation
bin110010000111001100000…
…0111010011101101001111
3220101102112200021100011022
41210032120013103231033
51400320330431044142
622352004255144355
71310411545253510
oct144163007235517
926342480240138
106887384628047
112215a18083610
129329a32150bb
133ac629335a71
1419b4cb96ca07
15be253bdb6d2
hex643981d3b4f

6887384628047 has 16 divisors (see below), whose sum is σ = 8587324838400. Its totient is φ = 5366508409440.

The previous prime is 6887384627999. The next prime is 6887384628083. The reversal of 6887384628047 is 7408264837886.

It is a cyclic number.

It is not a de Polignac number, because 6887384628047 - 214 = 6887384611663 is a prime.

It is a super-2 number, since 2×68873846280472 (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887384622047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907172 + ... + 3820697.

It is an arithmetic number, because the mean of its divisors is an integer number (536707802400).

Almost surely, 26887384628047 is an apocalyptic number.

6887384628047 is a deficient number, since it is larger than the sum of its proper divisors (1699940210353).

6887384628047 is a wasteful number, since it uses less digits than its factorization.

6887384628047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746806.

The product of its (nonzero) digits is 693633024, while the sum is 71.

The spelling of 6887384628047 in words is "six trillion, eight hundred eighty-seven billion, three hundred eighty-four million, six hundred twenty-eight thousand, forty-seven".

Divisors: 1 7 11 77 18919 132433 208109 1456763 4727869 33095083 52006559 364045913 89446553611 626125875277 983912089721 6887384628047