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6868749743 = 8382756021
BaseRepresentation
bin1100110010110100…
…01100110110101111
3122201200202122021122
412121122030312233
5103031344442433
63053325051155
7332133260312
oct63132146657
918650678248
106868749743
112a05259389
1213b83b6abb
1385607037b
14492352979
152a3040198
hex19968cdaf

6868749743 has 4 divisors (see below), whose sum is σ = 6951505848. Its totient is φ = 6785993640.

The previous prime is 6868749709. The next prime is 6868749749. The reversal of 6868749743 is 3479478686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6868749743 - 214 = 6868733359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868749749) 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 3 ways as a sum of consecutive naturals, for example, 41377928 + ... + 41378093.

It is an arithmetic number, because the mean of its divisors is an integer number (1737876462).

Almost surely, 26868749743 is an apocalyptic number.

6868749743 is a deficient number, since it is larger than the sum of its proper divisors (82756105).

6868749743 is an equidigital number, since it uses as much as digits as its factorization.

6868749743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82756104.

The product of its digits is 48771072, while the sum is 62.

The square root of 6868749743 is about 82877.9207207806. The cubic root of 6868749743 is about 1900.8998270587.

The spelling of 6868749743 in words is "six billion, eight hundred sixty-eight million, seven hundred forty-nine thousand, seven hundred forty-three".

Divisors: 1 83 82756021 6868749743