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53742163189 = 112131729371873
BaseRepresentation
bin110010000011010010…
…000101010011110101
312010201101100202110111
4302003102011103311
51340030443210224
640404441023021
73611531564341
oct620322052365
9163641322414
1053742163189
1120879060700
12a4ba184a71
1350b6136980
14285b728621
1515e8188d94
hexc834854f5

53742163189 has 96 divisors (see below), whose sum is σ = 71602241760. Its totient is φ = 39852933120.

The previous prime is 53742163183. The next prime is 53742163201. The reversal of 53742163189 is 98136124735.

It can be written as a sum of positive squares in 16 ways, for example, as 12874306225 + 40867856964 = 113465^2 + 202158^2 .

It is not a de Polignac number, because 53742163189 - 211 = 53742161141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53742163183) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28692157 + ... + 28694029.

It is an arithmetic number, because the mean of its divisors is an integer number (745856685).

Almost surely, 253742163189 is an apocalyptic number.

It is an amenable number.

53742163189 is a deficient number, since it is larger than the sum of its proper divisors (17860078571).

53742163189 is a wasteful number, since it uses less digits than its factorization.

53742163189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991 (or 1980 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The spelling of 53742163189 in words is "fifty-three billion, seven hundred forty-two million, one hundred sixty-three thousand, one hundred eighty-nine".

Divisors: 1 11 13 17 29 37 121 143 187 221 319 377 407 481 493 629 1073 1573 1873 2057 2431 3509 4147 4477 5291 5423 6409 6919 8177 11803 13949 18241 20603 24349 26741 31841 45617 54317 58201 59653 69301 70499 76109 89947 129833 153439 200651 226633 237133 267839 350251 413933 597487 706121 762311 775489 900913 923389 989417 1178117 1687829 2009729 2207161 2608463 2946229 3852761 4553263 6572357 7767331 8385421 9910043 10157279 12004057 12959287 15315521 22107019 26126477 28693093 34165393 50085893 85440641 109010473 111730069 132044627 142552157 168470731 243177209 287391247 375819323 444150109 1452490897 1853178041 3161303717 4134012553 4885651199 53742163189