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680080407768 = 233219497134801
BaseRepresentation
bin10011110010101111111…
…00110111110011011000
32102000101222021021012200
421321113330313303120
542120301041022033
61240231415210200
7100064012041416
oct11712774676330
92360358237180
10680080407768
1124246972a183
12ab979676960
134c192636188
1424cb79902b6
1512a55421013
hex9e57f37cd8

680080407768 has 48 divisors (see below), whose sum is σ = 1938825727800. Its totient is φ = 214762233600.

The previous prime is 680080407751. The next prime is 680080407781. The reversal of 680080407768 is 867704080086.

It is a super-2 number, since 2×6800804077682 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248566033 + ... + 248568768.

Almost surely, 2680080407768 is an apocalyptic number.

It is an amenable number.

680080407768 is an abundant number, since it is smaller than the sum of its proper divisors (1258745320032).

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

680080407768 is a wasteful number, since it uses less digits than its factorization.

680080407768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497134832 (or 497134825 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 680080407768 in words is "six hundred eighty billion, eighty million, four hundred seven thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 114 152 171 228 342 456 684 1368 497134801 994269602 1491404403 1988539204 2982808806 3977078408 4474213209 5965617612 8948426418 9445561219 11931235224 17896852836 18891122438 28336683657 35793705672 37782244876 56673367314 75564489752 85010050971 113346734628 170020101942 226693469256 340040203884 680080407768