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57481569078 = 23211428310601
BaseRepresentation
bin110101100010001010…
…110010001100110110
312111100222201020222220
4311202022302030312
51420210240202303
642223501303210
74103306163333
oct654212621466
9174328636886
1057481569078
112241793569a
12b182564b06
135560a7688b
142ad420598a
1517665d6053
hexd622b2336

57481569078 has 32 divisors (see below), whose sum is σ = 115545854592. Its totient is φ = 19063464000.

The previous prime is 57481569043. The next prime is 57481569091. The reversal of 57481569078 is 87096518475.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5416978 + ... + 5427578.

It is an arithmetic number, because the mean of its divisors is an integer number (3610807956).

Almost surely, 257481569078 is an apocalyptic number.

57481569078 is an abundant number, since it is smaller than the sum of its proper divisors (58064285514).

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

57481569078 is a wasteful number, since it uses less digits than its factorization.

57481569078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15100.

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 57481569078 in words is "fifty-seven billion, four hundred eighty-one million, five hundred sixty-nine thousand, seventy-eight".

Divisors: 1 2 3 6 211 422 633 1266 4283 8566 10601 12849 21202 25698 31803 63606 903713 1807426 2236811 2711139 4473622 5422278 6710433 13420866 45404083 90808166 136212249 272424498 9580261513 19160523026 28740784539 57481569078