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68421286574 = 2197272476699
BaseRepresentation
bin111111101110001110…
…011111101010101110
320112121101201111011222
4333232032133222232
52110111322132244
651233213343342
74641354224414
oct775616375256
9215541644158
1068421286574
112702103a333
1211316197b52
1365b53557b4
1434510a32b4
151ba6c18bee
hexfee39faae

68421286574 has 16 divisors (see below), whose sum is σ = 108182256000. Its totient is φ = 32365489464.

The previous prime is 68421286523. The next prime is 68421286613. The reversal of 68421286574 is 47568212486.

It is a super-3 number, since 3×684212865743 (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210724 + ... + 1265975.

It is an arithmetic number, because the mean of its divisors is an integer number (6761391000).

Almost surely, 268421286574 is an apocalyptic number.

68421286574 is a deficient number, since it is larger than the sum of its proper divisors (39760969426).

68421286574 is a wasteful number, since it uses less digits than its factorization.

68421286574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477447.

The product of its digits is 5160960, while the sum is 53.

The spelling of 68421286574 in words is "sixty-eight billion, four hundred twenty-one million, two hundred eighty-six thousand, five hundred seventy-four".

Divisors: 1 2 19 38 727 1454 13813 27626 2476699 4953398 47057281 94114562 1800560173 3601120346 34210643287 68421286574