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87395263769 = 1123393396761
BaseRepresentation
bin101000101100100101…
…0011110010100011001
322100120201121101202002
41101121022132110121
52412441141420034
6104052051450345
76212510325242
oct1213112362431
9270521541662
1087395263769
1134078391220
1214b305b69b5
13831a2b1638
144330dc5cc9
152417862e7e
hex145929e519

87395263769 has 8 divisors (see below), whose sum is σ = 95381076960. Its totient is φ = 79416248800.

The previous prime is 87395263727. The next prime is 87395263783. The reversal of 87395263769 is 96736259378.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87395263769 is a prime.

It is a super-2 number, since 2×873952637692 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87395268769) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1672652 + ... + 1724109.

It is an arithmetic number, because the mean of its divisors is an integer number (11922634620).

Almost surely, 287395263769 is an apocalyptic number.

It is an amenable number.

87395263769 is a deficient number, since it is larger than the sum of its proper divisors (7985813191).

87395263769 is a wasteful number, since it uses less digits than its factorization.

87395263769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399111.

The product of its digits is 102876480, while the sum is 65.

The spelling of 87395263769 in words is "eighty-seven billion, three hundred ninety-five million, two hundred sixty-three thousand, seven hundred sixty-nine".

Divisors: 1 11 2339 25729 3396761 37364371 7945023979 87395263769