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18054144700 = 2252274165867
BaseRepresentation
bin10000110100000111…
…000110001010111100
31201121020001120120221
4100310013012022330
5243433330112300
612143254551124
71206253461244
oct206407061274
951536046527
1018054144700
117725104149
1235ba3684a4
13191950a377
14c33ac2b24
1570a00131a
hex4341c62bc

18054144700 has 36 divisors (see below), whose sum is σ = 39192382152. Its totient is φ = 7218913600.

The previous prime is 18054144671. The next prime is 18054144701. The reversal of 18054144700 is 744145081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18054144701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241167 + ... + 307033.

It is an arithmetic number, because the mean of its divisors is an integer number (1088677282).

Almost surely, 218054144700 is an apocalyptic number.

18054144700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18054144700 is an abundant number, since it is smaller than the sum of its proper divisors (21138237452).

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

18054144700 is a wasteful number, since it uses less digits than its factorization.

18054144700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68622 (or 68615 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

Adding to 18054144700 its reverse (744145081), we get a palindrome (18798289781).

The spelling of 18054144700 in words is "eighteen billion, fifty-four million, one hundred forty-four thousand, seven hundred".

Divisors: 1 2 4 5 10 20 25 50 100 2741 5482 10964 13705 27410 54820 65867 68525 131734 137050 263468 274100 329335 658670 1317340 1646675 3293350 6586700 180541447 361082894 722165788 902707235 1805414470 3610828940 4513536175 9027072350 18054144700