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16995384831 = 314957378761
BaseRepresentation
bin11111101010000000…
…01111110111111111
31121212102211000002110
433311000033313333
5234301304303311
611450234025103
71141106246625
oct176500176777
947772730073
1016995384831
1172314a7197
123363878193
1317ab068839
14b7323b515
156970b48a6
hex3f500fdff

16995384831 has 8 divisors (see below), whose sum is σ = 22662087984. Its totient is φ = 11329469120.

The previous prime is 16995384817. The next prime is 16995384839. The reversal of 16995384831 is 13848359961.

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 16995384831 - 213 = 16995376639 is a prime.

It is a super-2 number, since 2×169953848312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16995384839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144510 + ... + 234251.

It is an arithmetic number, because the mean of its divisors is an integer number (2832760998).

Almost surely, 216995384831 is an apocalyptic number.

16995384831 is a deficient number, since it is larger than the sum of its proper divisors (5666703153).

16995384831 is a wasteful number, since it uses less digits than its factorization.

16995384831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393721.

The product of its digits is 5598720, while the sum is 57.

The spelling of 16995384831 in words is "sixteen billion, nine hundred ninety-five million, three hundred eighty-four thousand, eight hundred thirty-one".

Divisors: 1 3 14957 44871 378761 1136283 5665128277 16995384831