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16680106450 = 2527311537337
BaseRepresentation
bin11111000100011011…
…00011100111010010
31121001110120012110101
433202031203213102
5233130101401300
611355052323014
71130230364650
oct174215434722
947043505411
1016680106450
11708a537947
12329617346a
13175a94b797
14b4340bdd0
15679588b6a
hex3e23639d2

16680106450 has 48 divisors (see below), whose sum is σ = 36600943104. Its totient is φ = 5534409600.

The previous prime is 16680106447. The next prime is 16680106451. The reversal of 16680106450 is 5460108661.

It is not an unprimeable number, because it can be changed into a prime (16680106451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757819 + ... + 779518.

It is an arithmetic number, because the mean of its divisors is an integer number (762519648).

Almost surely, 216680106450 is an apocalyptic number.

16680106450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16680106450 is an abundant number, since it is smaller than the sum of its proper divisors (19920836654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16680106450 is a wasteful number, since it uses less digits than its factorization.

16680106450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537387 (or 1537382 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 16680106450 in words is "sixteen billion, six hundred eighty million, one hundred six thousand, four hundred fifty".

Divisors: 1 2 5 7 10 14 25 31 35 50 62 70 155 175 217 310 350 434 775 1085 1550 2170 5425 10850 1537337 3074674 7686685 10761359 15373370 21522718 38433425 47657447 53806795 76866850 95314894 107613590 238287235 269033975 333602129 476574470 538067950 667204258 1191436175 1668010645 2382872350 3336021290 8340053225 16680106450