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57840780018 = 2372474185901
BaseRepresentation
bin110101110111100101…
…000100001011110010
312112022000122001202210
4311313211010023302
51421424214430033
642323252352550
74115230342500
oct656745041362
9175260561683
1057840780018
112259168113a
12b262915756
1355ba306428
142b29bcd670
151787dddd63
hexd779442f2

57840780018 has 48 divisors (see below), whose sum is σ = 137431534464. Its totient is φ = 16174317600.

The previous prime is 57840779981. The next prime is 57840780043. The reversal of 57840780018 is 81008704875.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2079133 + ... + 2106768.

It is an arithmetic number, because the mean of its divisors is an integer number (2863156968).

Almost surely, 257840780018 is an apocalyptic number.

57840780018 is an abundant number, since it is smaller than the sum of its proper divisors (79590754446).

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

57840780018 is a wasteful number, since it uses less digits than its factorization.

57840780018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185967 (or 4185960 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 48.

The spelling of 57840780018 in words is "fifty-seven billion, eight hundred forty million, seven hundred eighty thousand, eighteen".

Divisors: 1 2 3 6 7 14 21 42 47 49 94 98 141 147 282 294 329 658 987 1974 2303 4606 6909 13818 4185901 8371802 12557703 25115406 29301307 58602614 87903921 175807842 196737347 205109149 393474694 410218298 590212041 615327447 1180424082 1230654894 1377161429 2754322858 4131484287 8262968574 9640130003 19280260006 28920390009 57840780018