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68107965272 = 2315754226087
BaseRepresentation
bin111111011011100011…
…010001001101011000
320111210120011010011022
4333123203101031120
52103441114342042
651142142022012
74630531103264
oct773343211530
9214716133138
1068107965272
1126980197406
1211249277908
136565472489
1434216230a4
151b89477cd2
hexfdb8d1358

68107965272 has 16 divisors (see below), whose sum is σ = 128515828560. Its totient is φ = 33837077664.

The previous prime is 68107965271. The next prime is 68107965337. The reversal of 68107965272 is 27256970186.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68107965271) 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, 27111788 + ... + 27114299.

It is an arithmetic number, because the mean of its divisors is an integer number (8032239285).

Almost surely, 268107965272 is an apocalyptic number.

It is an amenable number.

68107965272 is a deficient number, since it is larger than the sum of its proper divisors (60407863288).

68107965272 is a wasteful number, since it uses less digits than its factorization.

68107965272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54226250 (or 54226246 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 68107965272 in words is "sixty-eight billion, one hundred seven million, nine hundred sixty-five thousand, two hundred seventy-two".

Divisors: 1 2 4 8 157 314 628 1256 54226087 108452174 216904348 433808696 8513495659 17026991318 34053982636 68107965272