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68065652867 = 173339276199
BaseRepresentation
bin111111011001000001…
…110111000010000011
320111200121112102110012
4333121001313002003
52103344301342432
651134031055135
74626505334432
oct773101670203
9214617472405
1068065652867
1126959317483
12112370714ab
136559779254
143419b6b119
151b858bacb2
hexfd9077083

68065652867 has 4 divisors (see below), whose sum is σ = 68104930800. Its totient is φ = 68026374936.

The previous prime is 68065652791. The next prime is 68065652869. The reversal of 68065652867 is 76825656086.

68065652867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76825656086 = 238412828043.

It is a cyclic number.

It is not a de Polignac number, because 68065652867 - 220 = 68064604291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68065652869) 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, 19636367 + ... + 19639832.

It is an arithmetic number, because the mean of its divisors is an integer number (17026232700).

Almost surely, 268065652867 is an apocalyptic number.

68065652867 is a deficient number, since it is larger than the sum of its proper divisors (39277933).

68065652867 is a wasteful number, since it uses less digits than its factorization.

68065652867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39277932.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 68065652867 in words is "sixty-eight billion, sixty-five million, six hundred fifty-two thousand, eight hundred sixty-seven".

Divisors: 1 1733 39276199 68065652867