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80668080812 = 22113821479813
BaseRepresentation
bin100101100100000110…
…0010011101010101100
321201012220020002120202
41023020030103222230
52310202012041222
6101020340533032
75554013242034
oct1131014235254
9251186202522
1080668080812
1131236035090
12137736b1178
1377b76797c7
143c937a48c4
152171e88892
hex12c8313aac

80668080812 has 24 divisors (see below), whose sum is σ = 154043325072. Its totient is φ = 36657636800.

The previous prime is 80668080739. The next prime is 80668080827. The reversal of 80668080812 is 21808086608.

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, 71783 + ... + 408030.

It is an arithmetic number, because the mean of its divisors is an integer number (6418471878).

Almost surely, 280668080812 is an apocalyptic number.

It is an amenable number.

80668080812 is a deficient number, since it is larger than the sum of its proper divisors (73375244260).

80668080812 is a wasteful number, since it uses less digits than its factorization.

80668080812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483649 (or 483647 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The spelling of 80668080812 in words is "eighty billion, six hundred sixty-eight million, eighty thousand, eight hundred twelve".

Divisors: 1 2 4 11 22 44 3821 7642 15284 42031 84062 168124 479813 959626 1919252 5277943 10555886 21111772 1833365473 3666730946 7333461892 20167020203 40334040406 80668080812