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16868698873 = 1311378714591
BaseRepresentation
bin11111011010111001…
…11110101011111001
31121112121102200121221
433231130332223321
5234021341330443
611425510432041
71135010401045
oct175534765371
947477380557
1016868698873
117176a39154
123329362621
13178aa40630
14b604a1025
1568addceed
hex3ed73eaf9

16868698873 has 16 divisors (see below), whose sum is σ = 18351599616. Its totient is φ = 15412642560.

The previous prime is 16868698871. The next prime is 16868698879. The reversal of 16868698873 is 37889686861.

It is a cyclic number.

It is not a de Polignac number, because 16868698873 - 21 = 16868698871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16868698871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148808 + ... + 1163398.

It is an arithmetic number, because the mean of its divisors is an integer number (1146974976).

Almost surely, 216868698873 is an apocalyptic number.

16868698873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16868698873 is a deficient number, since it is larger than the sum of its proper divisors (1482900743).

16868698873 is a wasteful number, since it uses less digits than its factorization.

16868698873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15504.

The product of its digits is 167215104, while the sum is 70.

The spelling of 16868698873 in words is "sixteen billion, eight hundred sixty-eight million, six hundred ninety-eight thousand, eight hundred seventy-three".

Divisors: 1 13 113 787 1469 10231 14591 88931 189683 1156103 1648783 11483117 21434179 149280521 1297592221 16868698873