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20107158160 = 2451271979051
BaseRepresentation
bin10010101110011110…
…101110001010010000
31220220022011110121111
4102232132232022100
5312134413030120
613123114103104
71311163011235
oct225636561220
956808143544
1020107158160
118588a6a591
123a91a1aa94
131b8595662b
14d8a61b78c
157ca38675a
hex4ae7ae290

20107158160 has 40 divisors (see below), whose sum is σ = 47117270016. Its totient is φ = 7979529600.

The previous prime is 20107158133. The next prime is 20107158161. The reversal of 20107158160 is 6185170102.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20107158161) 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 7 ways as a sum of consecutive naturals, for example, 979366 + ... + 999685.

Almost surely, 220107158160 is an apocalyptic number.

20107158160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107158160 is an abundant number, since it is smaller than the sum of its proper divisors (27010111856).

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

20107158160 is a wasteful number, since it uses less digits than its factorization.

20107158160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979191 (or 1979185 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 20107158160 in words is "twenty billion, one hundred seven million, one hundred fifty-eight thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 127 254 508 635 1016 1270 2032 2540 5080 10160 1979051 3958102 7916204 9895255 15832408 19790510 31664816 39581020 79162040 158324080 251339477 502678954 1005357908 1256697385 2010715816 2513394770 4021431632 5026789540 10053579080 20107158160