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65680659160 = 2355330981443
BaseRepresentation
bin111101001010110111…
…110101001011011000
320021112101202012010221
4331022313311023120
52034003222043120
650101232245424
74513425251134
oct751267651330
9207471665127
1065680659160
11259450243a6
12108903a0874
136269615a7c
1432710d63c4
151a9630b0aa
hexf4adf52d8

65680659160 has 32 divisors (see below), whose sum is σ = 150569817840. Its totient is φ = 25776559744.

The previous prime is 65680659101. The next prime is 65680659199. The reversal of 65680659160 is 6195608656.

It is a junction number, because it is equal to n+sod(n) for n = 65680659098 and 65680659107.

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, 15488602 + ... + 15492841.

Almost surely, 265680659160 is an apocalyptic number.

It is an amenable number.

65680659160 is an abundant number, since it is smaller than the sum of its proper divisors (84889158680).

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

65680659160 is a wasteful number, since it uses less digits than its factorization.

65680659160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30981507 (or 30981503 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 65680659160 in words is "sixty-five billion, six hundred eighty million, six hundred fifty-nine thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 53 106 212 265 424 530 1060 2120 30981443 61962886 123925772 154907215 247851544 309814430 619628860 1239257720 1642016479 3284032958 6568065916 8210082395 13136131832 16420164790 32840329580 65680659160