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68949800612 = 22721131980427
BaseRepresentation
bin100000000110110111…
…0100111011010100100
320120222020012210010222
41000031232213122210
52112202122104422
651401453303512
74660432430600
oct1001556473244
9216866183128
1068949800612
11272724017a0
1211443194b98
13666a9b23b4
1434a135c500
151bd8315842
hex100dba76a4

68949800612 has 36 divisors (see below), whose sum is σ = 153122289264. Its totient is φ = 26863557840.

The previous prime is 68949800597. The next prime is 68949800617. The reversal of 68949800612 is 21600894986.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68949800617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15988058 + ... + 15992369.

It is an arithmetic number, because the mean of its divisors is an integer number (4253396924).

Almost surely, 268949800612 is an apocalyptic number.

It is an amenable number.

68949800612 is an abundant number, since it is smaller than the sum of its proper divisors (84172488652).

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

68949800612 is a wasteful number, since it uses less digits than its factorization.

68949800612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980456 (or 31980447 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 68949800612 in words is "sixty-eight billion, nine hundred forty-nine million, eight hundred thousand, six hundred twelve".

Divisors: 1 2 4 7 11 14 22 28 44 49 77 98 154 196 308 539 1078 2156 31980427 63960854 127921708 223862989 351784697 447725978 703569394 895451956 1407138788 1567040923 2462492879 3134081846 4924985758 6268163692 9849971516 17237450153 34474900306 68949800612