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16387080191 = 283279120747
BaseRepresentation
bin11110100001011111…
…01111111111111111
31120022001011220222222
433100233233333333
5232030043031231
611310023555555
71120041611666
oct172057577777
946261156888
1016387080191
116a4a096989
123213bbbbbb
131712022c71
14b16531ddd
1565d9a627b
hex3d0beffff

16387080191 has 8 divisors (see below), whose sum is σ = 16451670144. Its totient is φ = 16322537880.

The previous prime is 16387080167. The next prime is 16387080251. The reversal of 16387080191 is 19108078361.

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 16387080191 - 214 = 16387063807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16387080491) 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, 779480 + ... + 800226.

It is an arithmetic number, because the mean of its divisors is an integer number (2056458768).

Almost surely, 216387080191 is an apocalyptic number.

16387080191 is a deficient number, since it is larger than the sum of its proper divisors (64589953).

16387080191 is a wasteful number, since it uses less digits than its factorization.

16387080191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23821.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 16387080191 in words is "sixteen billion, three hundred eighty-seven million, eighty thousand, one hundred ninety-one".

Divisors: 1 283 2791 20747 789853 5871401 57904877 16387080191