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68949803210 = 2589582113309
BaseRepresentation
bin100000000110110111…
…0101000000011001010
320120222020012220201012
41000031232220003022
52112202122200320
651401453323522
74660432441301
oct1001556500312
9216866186635
1068949803210
1127272403742
12114431965a2
13666a9b3632
1434a135d438
151bd83164c5
hex100dba80ca

68949803210 has 32 divisors (see below), whose sum is σ = 125535128400. Its totient is φ = 27263301120.

The previous prime is 68949803179. The next prime is 68949803239. The reversal of 68949803210 is 1230894986.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10800821329 + 58148981881 = 103927^2 + 241141^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5174036 + ... + 5187344.

Almost surely, 268949803210 is an apocalyptic number.

68949803210 is a deficient number, since it is larger than the sum of its proper divisors (56585325190).

68949803210 is a wasteful number, since it uses less digits than its factorization.

68949803210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19226.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 68949803210 in words is "sixty-eight billion, nine hundred forty-nine million, eight hundred three thousand, two hundred ten".

Divisors: 1 2 5 10 89 178 445 890 5821 11642 13309 26618 29105 58210 66545 133090 518069 1036138 1184501 2369002 2590345 5180690 5922505 11845010 77471689 154943378 387358445 774716890 6894980321 13789960642 34474901605 68949803210