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57091566814 = 21913693109721
BaseRepresentation
bin110101001010111011…
…000010110011011110
312110100210212002110121
4311022323002303132
51413410420114224
642121050225154
74060532211442
oct651273026336
9173323762417
1057091566814
1122237779177
12b093a251ba
1354cb025ac9
142a984c4822
151742249be4
hexd4aec2cde

57091566814 has 16 divisors (see below), whose sum is σ = 90151984080. Its totient is φ = 27041152320.

The previous prime is 57091566751. The next prime is 57091566827. The reversal of 57091566814 is 41866519075.

It is a super-2 number, since 2×570915668142 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465474 + ... + 575194.

It is an arithmetic number, because the mean of its divisors is an integer number (5634499005).

Almost surely, 257091566814 is an apocalyptic number.

57091566814 is a deficient number, since it is larger than the sum of its proper divisors (33060417266).

57091566814 is a wasteful number, since it uses less digits than its factorization.

57091566814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123435.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 57091566814 in words is "fifty-seven billion, ninety-one million, five hundred sixty-six thousand, eight hundred fourteen".

Divisors: 1 2 19 38 13693 27386 109721 219442 260167 520334 2084699 4169398 1502409653 3004819306 28545783407 57091566814