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18053609143 = 647156717807
BaseRepresentation
bin10000110100000101…
…000011011010110111
31201121012001100221111
4100310011003122313
5243433210443033
612143235255451
71206246100663
oct206405033267
951535040844
1018053609143
117724878839
1235ba14a587
13191938067b
14c339c38a3
15709e477cd
hex4341436b7

18053609143 has 8 divisors (see below), whose sum is σ = 18094067712. Its totient is φ = 18013190616.

The previous prime is 18053609113. The next prime is 18053609173. The reversal of 18053609143 is 34190635081.

It is an interprime number because it is at equal distance from previous prime (18053609113) and next prime (18053609173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18053609143 - 213 = 18053600951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18053609096 and 18053609105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053609113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004946 + ... + 1022752.

It is an arithmetic number, because the mean of its divisors is an integer number (2261758464).

Almost surely, 218053609143 is an apocalyptic number.

18053609143 is a deficient number, since it is larger than the sum of its proper divisors (40458569).

18053609143 is a wasteful number, since it uses less digits than its factorization.

18053609143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 18053609143 in words is "eighteen billion, fifty-three million, six hundred nine thousand, one hundred forty-three".

Divisors: 1 647 1567 17807 1013849 11521129 27903569 18053609143