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12740340561920 = 211517647113117
BaseRepresentation
bin1011100101100101011101…
…1110010011100000000000
31200002222001020110101011022
42321121113132103200000
53132214204140440140
643032455345405012
72453313341654516
oct271312736234000
950088036411138
1012740340561920
11407216a11a774
1215191b6339768
1371554163c3ba
143208c87c24b6
151716138320b5
hexb9657793800

12740340561920 has 192 divisors, whose sum is σ = 32417863208640. Its totient is φ = 4788907933696.

The previous prime is 12740340561877. The next prime is 12740340561967. The reversal of 12740340561920 is 2916504304721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112573202 + ... + 112686318.

It is an arithmetic number, because the mean of its divisors is an integer number (168843037545).

Almost surely, 212740340561920 is an apocalyptic number.

12740340561920 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 12740340561920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16208931604320).

12740340561920 is an abundant number, since it is smaller than the sum of its proper divisors (19677522646720).

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

12740340561920 is a wasteful number, since it uses less digits than its factorization.

12740340561920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113808 (or 113788 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 12740340561920 in words is "twelve trillion, seven hundred forty billion, three hundred forty million, five hundred sixty-one thousand, nine hundred twenty".