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68560834271 = 292364166699
BaseRepresentation
bin111111110110100010…
…110100111011011111
320112222010022020122012
4333312202310323133
52110403033144041
651255120341435
74645000322126
oct776642647337
9215863266565
1068560834271
1127092892606
1211354a7487b
136608234cb7
14346582aabd
151bb40d13eb
hexff68b4edf

68560834271 has 4 divisors (see below), whose sum is σ = 70925001000. Its totient is φ = 66196667544.

The previous prime is 68560834261. The next prime is 68560834273. The reversal of 68560834271 is 17243806586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17243806586 = 28621903293.

It is a cyclic number.

It is not a de Polignac number, because 68560834271 - 222 = 68556639967 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 (68560834273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182083321 + ... + 1182083378.

It is an arithmetic number, because the mean of its divisors is an integer number (17731250250).

Almost surely, 268560834271 is an apocalyptic number.

68560834271 is a deficient number, since it is larger than the sum of its proper divisors (2364166729).

68560834271 is a wasteful number, since it uses less digits than its factorization.

68560834271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364166728.

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

The spelling of 68560834271 in words is "sixty-eight billion, five hundred sixty million, eight hundred thirty-four thousand, two hundred seventy-one".

Divisors: 1 29 2364166699 68560834271