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87092073385 = 517418414677
BaseRepresentation
bin101000100011100010…
…1111001001110101001
322022210121002201201121
41101013011321032221
52411331032322020
6104002021215241
76202136260252
oct1210705711651
9268717081647
1087092073385
1133a32228859
1214a66b61521
13829c537645
144302a21b29
1523eae23baa
hex14471793a9

87092073385 has 4 divisors (see below), whose sum is σ = 104510488068. Its totient is φ = 69673658704.

The previous prime is 87092073379. The next prime is 87092073407. The reversal of 87092073385 is 58337029078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58337029078 = 229168514539.

It can be written as a sum of positive squares in 2 ways, for example, as 52850791449 + 34241281936 = 229893^2 + 185044^2 .

It is a cyclic number.

It is not a de Polignac number, because 87092073385 - 229 = 86555202473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8709207334 + ... + 8709207343.

It is an arithmetic number, because the mean of its divisors is an integer number (26127622017).

Almost surely, 287092073385 is an apocalyptic number.

It is an amenable number.

87092073385 is a deficient number, since it is larger than the sum of its proper divisors (17418414683).

87092073385 is a wasteful number, since it uses less digits than its factorization.

87092073385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17418414682.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 87092073385 in words is "eighty-seven billion, ninety-two million, seventy-three thousand, three hundred eighty-five".

Divisors: 1 5 17418414677 87092073385