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18053005044 = 2232579958313
BaseRepresentation
bin10000110100000010…
…101111111011110100
31201121010220200021110
4100310002233323310
5243433032130134
612143214315020
71206241003524
oct206402577364
951533820243
1018053005044
1177244a5988
1235b9ab8a70
1319191cb709
14c338a7684
15709d787e9
hex4340afef4

18053005044 has 24 divisors (see below), whose sum is σ = 42126033600. Its totient is φ = 6017331904.

The previous prime is 18053005043. The next prime is 18053005063. The reversal of 18053005044 is 44050035081.

It is a super-2 number, since 2×180530050442 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053005043) 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, 280432 + ... + 338744.

It is an arithmetic number, because the mean of its divisors is an integer number (1755251400).

Almost surely, 218053005044 is an apocalyptic number.

It is an amenable number.

18053005044 is an abundant number, since it is smaller than the sum of its proper divisors (24073028556).

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

18053005044 is a wasteful number, since it uses less digits than its factorization.

18053005044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84119 (or 84117 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 18053005044 in words is "eighteen billion, fifty-three million, five thousand, forty-four".

Divisors: 1 2 3 4 6 12 25799 51598 58313 77397 103196 116626 154794 174939 233252 309588 349878 699756 1504417087 3008834174 4513251261 6017668348 9026502522 18053005044