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68296925680 = 245853711571
BaseRepresentation
bin111111100110110100…
…000110000111110000
320112021201201022002221
4333212310012013300
52104333003110210
651213012050424
74635314201254
oct774664060760
9215251638087
1068296925680
1126a6791a135
12112a0603a14
136595662979
14343c770264
151b9ad511da
hexfe6d061f0

68296925680 has 20 divisors (see below), whose sum is σ = 158790352392. Its totient is φ = 27318770240.

The previous prime is 68296925663. The next prime is 68296925681. The reversal of 68296925680 is 8652969286.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68296925681) 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, 426855706 + ... + 426855865.

Almost surely, 268296925680 is an apocalyptic number.

It is an amenable number.

68296925680 is an abundant number, since it is smaller than the sum of its proper divisors (90493426712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68296925680 is a wasteful number, since it uses less digits than its factorization.

68296925680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853711584 (or 853711578 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 68296925680 in words is "sixty-eight billion, two hundred ninety-six million, nine hundred twenty-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 853711571 1707423142 3414846284 4268557855 6829692568 8537115710 13659385136 17074231420 34148462840 68296925680