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68320654758 = 2323795591931
BaseRepresentation
bin111111101000001110…
…100111010110100110
320112100101100212021200
4333220032213112212
52104410041423013
651215220423330
74636022661246
oct775016472646
9215311325250
1068320654758
1126a7a257144
12112a8547b46
13659a550545
143441989b26
151b9ce8be73
hexfe83a75a6

68320654758 has 12 divisors (see below), whose sum is σ = 148028085348. Its totient is φ = 22773551580.

The previous prime is 68320654757. The next prime is 68320654781. The reversal of 68320654758 is 85745602386.

68320654758 is a `hidden beast` number, since 68 + 32 + 0 + 6 + 547 + 5 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68320654757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1897795948 + ... + 1897795983.

It is an arithmetic number, because the mean of its divisors is an integer number (12335673779).

Almost surely, 268320654758 is an apocalyptic number.

68320654758 is an abundant number, since it is smaller than the sum of its proper divisors (79707430590).

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

68320654758 is a wasteful number, since it uses less digits than its factorization.

68320654758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795591939 (or 3795591936 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 68320654758 in words is "sixty-eight billion, three hundred twenty million, six hundred fifty-four thousand, seven hundred fifty-eight".

Divisors: 1 2 3 6 9 18 3795591931 7591183862 11386775793 22773551586 34160327379 68320654758