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168683384870 = 257111316851487
BaseRepresentation
bin1001110100011001010…
…0000011000000100110
3121010101211112210200222
42131012110003000212
510230430421303440
6205254142204342
715121063054040
oct2350624030046
9533354483628
10168683384870
11655a14117a0
12288378836b2
1312ba3252590
148242c6ca90
1545c3e772b5
hex2746503026

168683384870 has 64 divisors (see below), whose sum is σ = 407671197696. Its totient is φ = 48532279680.

The previous prime is 168683384861. The next prime is 168683384873. The reversal of 168683384870 is 78483386861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168683384873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8415734 + ... + 8435753.

It is an arithmetic number, because the mean of its divisors is an integer number (6369862464).

Almost surely, 2168683384870 is an apocalyptic number.

168683384870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168683384870 is an abundant number, since it is smaller than the sum of its proper divisors (238987812826).

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

168683384870 is a wasteful number, since it uses less digits than its factorization.

168683384870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16851525.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 168683384870 in words is "one hundred sixty-eight billion, six hundred eighty-three million, three hundred eighty-four thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 11 13 14 22 26 35 55 65 70 77 91 110 130 143 154 182 286 385 455 715 770 910 1001 1430 2002 5005 10010 16851487 33702974 84257435 117960409 168514870 185366357 219069331 235920818 370732714 438138662 589802045 926831785 1095346655 1179604090 1297564499 1533485317 1853663570 2190693310 2409762641 2595128998 3066970634 4819525282 6487822495 7667426585 12048813205 12975644990 15334853170 16868338487 24097626410 33736676974 84341692435 168683384870