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18181057056010 = 251995689773979
BaseRepresentation
bin1000010001001000110110…
…11100101000110100001010
32101101002111010102002011221
410020210123130220310022
54340334301101243020
6102400132354112254
73554352354060562
oct410443334506412
971332433362157
1018181057056010
11587a5a7802242
12205773b27b68a
13a1b60a68a044
1446bd79b27da2
15217de72b36aa
hex10891b728d0a

18181057056010 has 16 divisors (see below), whose sum is σ = 34448318632800. Its totient is φ = 6889663726416.

The previous prime is 18181057055963. The next prime is 18181057056017. The reversal of 18181057056010 is 1065075018181.

It is not an unprimeable number, because it can be changed into a prime (18181057056017) 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, 47844886800 + ... + 47844887179.

It is an arithmetic number, because the mean of its divisors is an integer number (2153019914550).

Almost surely, 218181057056010 is an apocalyptic number.

18181057056010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18181057056010 is a deficient number, since it is larger than the sum of its proper divisors (16267261576790).

18181057056010 is a wasteful number, since it uses less digits than its factorization.

18181057056010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95689774005.

The product of its (nonzero) digits is 67200, while the sum is 43.

The spelling of 18181057056010 in words is "eighteen trillion, one hundred eighty-one billion, fifty-seven million, fifty-six thousand, ten".

Divisors: 1 2 5 10 19 38 95 190 95689773979 191379547958 478448869895 956897739790 1818105705601 3636211411202 9090528528005 18181057056010