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68801047850 = 25212211112687
BaseRepresentation
bin100000000010011011…
…1001010110100101010
320120120212022100201102
41000010313022310222
52111401032012400
651335021121402
74653645154223
oct1000467126452
9216525270642
1068801047850
11271a6441627
12114013b9262
136645c2c102
1434896ba24a
151bca2309d5
hex1004dcad2a

68801047850 has 24 divisors (see below), whose sum is σ = 127981564608. Its totient is φ = 27517921200.

The previous prime is 68801047789. The next prime is 68801047873. The reversal of 68801047850 is 5874010886.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68801047795 and 68801047804.

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, 554207 + ... + 666893.

It is an arithmetic number, because the mean of its divisors is an integer number (5332565192).

Almost surely, 268801047850 is an apocalyptic number.

68801047850 is a deficient number, since it is larger than the sum of its proper divisors (59180516758).

68801047850 is a wasteful number, since it uses less digits than its factorization.

68801047850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124910 (or 124905 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 68801047850 in words is "sixty-eight billion, eight hundred one million, forty-seven thousand, eight hundred fifty".

Divisors: 1 2 5 10 25 50 12211 24422 61055 112687 122110 225374 305275 563435 610550 1126870 2817175 5634350 1376020957 2752041914 6880104785 13760209570 34400523925 68801047850