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16716385291 = 29576427079
BaseRepresentation
bin11111001000101111…
…11100110000001011
31121010222211100200011
433210113330300023
5233213343312131
611402430052351
71131150634114
oct174427746013
947128740604
1016716385291
1170a8a66761
1232a634a0b7
131765311658
14b4817320b
1567c8530b1
hex3e45fcc0b

16716385291 has 4 divisors (see below), whose sum is σ = 17292812400. Its totient is φ = 16139958184.

The previous prime is 16716385261. The next prime is 16716385313. The reversal of 16716385291 is 19258361761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16716385291 - 27 = 16716385163 is a prime.

It is a super-2 number, since 2×167163852912 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16716385201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288213511 + ... + 288213568.

It is an arithmetic number, because the mean of its divisors is an integer number (4323203100).

Almost surely, 216716385291 is an apocalyptic number.

16716385291 is a deficient number, since it is larger than the sum of its proper divisors (576427109).

16716385291 is an equidigital number, since it uses as much as digits as its factorization.

16716385291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576427108.

The product of its digits is 544320, while the sum is 49.

The spelling of 16716385291 in words is "sixteen billion, seven hundred sixteen million, three hundred eighty-five thousand, two hundred ninety-one".

Divisors: 1 29 576427079 16716385291