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16182055081 = 172173943787
BaseRepresentation
bin11110001001000011…
…01001000010101001
31112202202101120102101
433010201221002221
5231120101230311
611233421333401
71112002125103
oct170441510251
945682346371
1016182055081
116954391545
123177407261
1316ab6c962a
14ad7202573
1564a9a7ec1
hex3c48690a9

16182055081 has 8 divisors (see below), whose sum is σ = 17135120160. Its totient is φ = 15229121088.

The previous prime is 16182055079. The next prime is 16182055091. The reversal of 16182055081 is 18055028161.

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 16182055081 - 21 = 16182055079 is a prime.

It is a super-2 number, since 2×161820550812 (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 16182055081.

It is not an unprimeable number, because it can be changed into a prime (16182055091) 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, 347670 + ... + 391456.

It is an arithmetic number, because the mean of its divisors is an integer number (2141890020).

Almost surely, 216182055081 is an apocalyptic number.

It is an amenable number.

16182055081 is a deficient number, since it is larger than the sum of its proper divisors (953065079).

16182055081 is a wasteful number, since it uses less digits than its factorization.

16182055081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65543.

The product of its (nonzero) digits is 19200, while the sum is 37.

The spelling of 16182055081 in words is "sixteen billion, one hundred eighty-two million, fifty-five thousand, eighty-one".

Divisors: 1 17 21739 43787 369563 744379 951885593 16182055081