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57317526816 = 2531154277961
BaseRepresentation
bin110101011000011001…
…000000110100100000
312110221120001001022120
4311120121000310200
51414341241324231
642155321304240
74066244640114
oct653031006440
9173846031276
1057317526816
1122343282280
12b137635080
135535a9c254
142aba503744
151756ed0d96
hexd58640d20

57317526816 has 48 divisors (see below), whose sum is σ = 164136557088. Its totient is φ = 17368947200.

The previous prime is 57317526797. The next prime is 57317526817. The reversal of 57317526816 is 61862571375.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (57317526817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27137925 + ... + 27140036.

It is an arithmetic number, because the mean of its divisors is an integer number (3419511606).

Almost surely, 257317526816 is an apocalyptic number.

It is an amenable number.

57317526816 is an abundant number, since it is smaller than the sum of its proper divisors (106819030272).

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

57317526816 is a wasteful number, since it uses less digits than its factorization.

57317526816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54277985 (or 54277977 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The spelling of 57317526816 in words is "fifty-seven billion, three hundred seventeen million, five hundred twenty-six thousand, eight hundred sixteen".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 66 88 96 132 176 264 352 528 1056 54277961 108555922 162833883 217111844 325667766 434223688 597057571 651335532 868447376 1194115142 1302671064 1736894752 1791172713 2388230284 2605342128 3582345426 4776460568 5210684256 7164690852 9552921136 14329381704 19105842272 28658763408 57317526816