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857083387567751 = 1321819017921931
BaseRepresentation
bin1100001011100000110100011…
…0110110111101111010000111
311011101200101000221001211010222
43002320031012312331322013
51344314423234204132001
612234510401141534555
7345350142223235621
oct30270150666757207
94141611027054128
10857083387567751
11229103029189573
128016460441445b
132aa31802a11056
14111910b331dc11
156914a8c18861b
hex30b8346dbde87

857083387567751 has 8 divisors (see below), whose sum is σ = 857742782705808. Its totient is φ = 856424008440000.

The previous prime is 857083387567747. The next prime is 857083387567817. The reversal of 857083387567751 is 157765783380758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 857083387567751 - 22 = 857083387567747 is a prime.

It is a super-2 number, since 2×8570833875677512 (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857083387567711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104230256 + ... + 112152186.

It is an arithmetic number, because the mean of its divisors is an integer number (107217847838226).

Almost surely, 2857083387567751 is an apocalyptic number.

857083387567751 is a deficient number, since it is larger than the sum of its proper divisors (659395138057).

857083387567751 is a wasteful number, since it uses less digits than its factorization.

857083387567751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8005153.

The product of its (nonzero) digits is 8297856000, while the sum is 80.

The spelling of 857083387567751 in words is "eight hundred fifty-seven trillion, eighty-three billion, three hundred eighty-seven million, five hundred sixty-seven thousand, seven hundred fifty-one".

Divisors: 1 1321 81901 7921931 108191221 10464870851 648814070831 857083387567751