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17992127471 = 791132015473
BaseRepresentation
bin10000110000011010…
…100001001111101111
31201102220100202221112
4100300122201033233
5243321441034341
612133201422235
71204601363063
oct206032411757
951386322845
1017992127471
1176a30a573a
1235a163a97b
131909705196
14c2977baa3
15704850aeb
hex4306a13ef

17992127471 has 8 divisors (see below), whose sum is σ = 18381122880. Its totient is φ = 17607163392.

The previous prime is 17992127437. The next prime is 17992127477. The reversal of 17992127471 is 17472129971.

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 17992127471 - 214 = 17992111087 is a prime.

It is a super-3 number, since 3×179921274713 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17992127477) 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, 998810 + ... + 1016663.

It is an arithmetic number, because the mean of its divisors is an integer number (2297640360).

Almost surely, 217992127471 is an apocalyptic number.

17992127471 is a deficient number, since it is larger than the sum of its proper divisors (388995409).

17992127471 is a wasteful number, since it uses less digits than its factorization.

17992127471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015665.

The product of its digits is 444528, while the sum is 50.

The spelling of 17992127471 in words is "seventeen billion, nine hundred ninety-two million, one hundred twenty-seven thousand, four hundred seventy-one".

Divisors: 1 79 113 8927 2015473 159222367 227748449 17992127471