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12145760860 = 2252920940967
BaseRepresentation
bin10110100111111000…
…11001101001011100
31011100110101120122211
423103330121221130
5144333303321420
65325113450204
7606661156342
oct132374315134
934313346584
1012145760860
115172a689a2
12242b710964
1311b740b05c
14833121992
154b1463e5a
hex2d3f19a5c

12145760860 has 24 divisors (see below), whose sum is σ = 26385619680. Its totient is φ = 4690776384.

The previous prime is 12145760807. The next prime is 12145760867. The reversal of 12145760860 is 6806754121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145760867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10469904 + ... + 10471063.

It is an arithmetic number, because the mean of its divisors is an integer number (1099400820).

Almost surely, 212145760860 is an apocalyptic number.

12145760860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12145760860 is an abundant number, since it is smaller than the sum of its proper divisors (14239858820).

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

12145760860 is a wasteful number, since it uses less digits than its factorization.

12145760860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20941005 (or 20941003 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 12145760860 in words is "twelve billion, one hundred forty-five million, seven hundred sixty thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 20940967 41881934 83763868 104704835 209409670 418819340 607288043 1214576086 2429152172 3036440215 6072880430 12145760860