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1381061867710 = 257139797178091
BaseRepresentation
bin10100000110001101101…
…100111011100010111110
311220000202120112222212211
4110012031230323202332
5140111403314231320
62534241232451034
7201531000120250
oct24061554734276
94800676488784
101381061867710
11492783469198
121a37aa9a9a7a
13a030621b535
144abb5377cd0
1525dd074655a
hex1418db3b8be

1381061867710 has 64 divisors (see below), whose sum is σ = 2865087106560. Its totient is φ = 469507927680.

The previous prime is 1381061867683. The next prime is 1381061867719. The reversal of 1381061867710 is 177681601831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381061867719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7665765 + ... + 7843855.

It is an arithmetic number, because the mean of its divisors is an integer number (44766986040).

Almost surely, 21381061867710 is an apocalyptic number.

1381061867710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381061867710 is an abundant number, since it is smaller than the sum of its proper divisors (1484025238850).

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

1381061867710 is a wasteful number, since it uses less digits than its factorization.

1381061867710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179041.

The product of its (nonzero) digits is 338688, while the sum is 49.

The spelling of 1381061867710 in words is "one trillion, three hundred eighty-one billion, sixty-one million, eight hundred sixty-seven thousand, seven hundred ten".

Divisors: 1 2 5 7 10 14 35 70 139 278 695 797 973 1390 1594 1946 3985 4865 5579 7970 9730 11158 27895 55790 110783 178091 221566 356182 553915 775481 890455 1107830 1246637 1550962 1780910 2493274 3877405 6233185 7754810 12466370 24754649 49509298 123773245 141938527 173282543 247546490 283877054 346565086 709692635 866412715 993569689 1419385270 1732825430 1987139378 4967848445 9935696890 19729455253 39458910506 98647276265 138106186771 197294552530 276212373542 690530933855 1381061867710