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19490484231680 = 295721131071091
BaseRepresentation
bin1000110111001111110110…
…11000111001111000000000
32120000021100100122200021112
410123213323120321320000
510023313002430403210
6105241445502542452
74051066240321400
oct433477330717000
976007310580245
1019490484231680
116234960262000
122229477897a28
13ab4c3889c627
144b54b7324800
1523bed3b45d05
hex11b9fb639e00

19490484231680 has 960 divisors, whose sum is σ = 60407270187264. Its totient is φ = 6012664627200.

The previous prime is 19490484231637. The next prime is 19490484231733. The reversal of 19490484231680 is 8613248409491.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 17864787935 + ... + 17864789025.

Almost surely, 219490484231680 is an apocalyptic number.

19490484231680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19490484231680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30203635093632).

19490484231680 is an abundant number, since it is smaller than the sum of its proper divisors (40916785955584).

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

19490484231680 is a wasteful number, since it uses less digits than its factorization.

19490484231680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 19490484231680 in words is "nineteen trillion, four hundred ninety billion, four hundred eighty-four million, two hundred thirty-one thousand, six hundred eighty".