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16868439001 = 199729633089
BaseRepresentation
bin11111011010110111…
…11111001111011001
31121112120221111011001
433231123333033121
5234021310022001
611425501105001
71135005236311
oct175533771731
947476844131
1016868439001
117176880987
123329258161
13178a97c26b
14b60434441
1568ad8b001
hex3ed6ff3d9

16868439001 has 16 divisors (see below), whose sum is σ = 17951169600. Its totient is φ = 15805421568.

The previous prime is 16868438999. The next prime is 16868439017. The reversal of 16868439001 is 10093486861.

It is a cyclic number.

It is not a de Polignac number, because 16868439001 - 21 = 16868438999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16868439061) 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, 5459265 + ... + 5462353.

It is an arithmetic number, because the mean of its divisors is an integer number (1121948100).

Almost surely, 216868439001 is an apocalyptic number.

It is an amenable number.

16868439001 is a deficient number, since it is larger than the sum of its proper divisors (1082730599).

16868439001 is a wasteful number, since it uses less digits than its factorization.

16868439001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 16868439001 in words is "sixteen billion, eight hundred sixty-eight million, four hundred thirty-nine thousand, one".

Divisors: 1 19 97 1843 2963 3089 56297 58691 287411 299633 5460809 5693027 9152707 173901433 887812579 16868439001