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16086865385 = 531371025621
BaseRepresentation
bin11101111101101101…
…00001010111101001
31112112010021102201002
432332312201113221
5230421214143020
611220141204345
71106435046113
oct167666412751
945463242632
1016086865385
116905686078
12314b5606b5
131694a7b476
14ac87043b3
15642453975
hex3beda15e9

16086865385 has 8 divisors (see below), whose sum is σ = 19310411016. Its totient is φ = 12865377280.

The previous prime is 16086865373. The next prime is 16086865397. The reversal of 16086865385 is 58356868061.

It is an interprime number because it is at equal distance from previous prime (16086865373) and next prime (16086865397).

It can be written as a sum of positive squares in 4 ways, for example, as 1841010649 + 14245854736 = 42907^2 + 119356^2 .

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

It is not a de Polignac number, because 16086865385 - 212 = 16086861289 is a prime.

It is a super-2 number, since 2×160868653852 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16086865385.

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, 497126 + ... + 528495.

It is an arithmetic number, because the mean of its divisors is an integer number (2413801377).

Almost surely, 216086865385 is an apocalyptic number.

It is an amenable number.

16086865385 is a deficient number, since it is larger than the sum of its proper divisors (3223545631).

16086865385 is a wasteful number, since it uses less digits than its factorization.

16086865385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028763.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 16086865385 in words is "sixteen billion, eighty-six million, eight hundred sixty-five thousand, three hundred eighty-five".

Divisors: 1 5 3137 15685 1025621 5128105 3217373077 16086865385