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168085724380 = 22571200612317
BaseRepresentation
bin1001110010001010110…
…0001001110011011100
3121001212011221111122021
42130202230021303130
510223214421140010
6205114552225524
715100215040450
oct2344254116334
9531764844567
10168085724380
1165315011602
12286ab69b2a4
1312b09495812
1481c7734660
15458b76c8da
hex2722b09cdc

168085724380 has 24 divisors (see below), whose sum is σ = 403405738848. Its totient is φ = 57629391168.

The previous prime is 168085724357. The next prime is 168085724449. The reversal of 168085724380 is 83427580861.

It is a congruent number.

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, 600306019 + ... + 600306298.

It is an arithmetic number, because the mean of its divisors is an integer number (16808572452).

Almost surely, 2168085724380 is an apocalyptic number.

168085724380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168085724380 is an abundant number, since it is smaller than the sum of its proper divisors (235320014468).

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

168085724380 is a wasteful number, since it uses less digits than its factorization.

168085724380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200612333 (or 1200612331 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 168085724380 in words is "one hundred sixty-eight billion, eighty-five million, seven hundred twenty-four thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1200612317 2401224634 4802449268 6003061585 8404286219 12006123170 16808572438 24012246340 33617144876 42021431095 84042862190 168085724380