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12941943660 = 2232571899687
BaseRepresentation
bin11000000110110011…
…00110001101101100
31020101221112212010200
430003121212031230
5203001114144120
65540114433500
7635466464112
oct140331461554
936357485120
1012941943660
115541431908
122612292890
1312b3355639
148aab75ab2
1550b2d4e90
hex30366636c

12941943660 has 36 divisors (see below), whose sum is σ = 39257229648. Its totient is φ = 3451184928.

The previous prime is 12941943647. The next prime is 12941943661. The reversal of 12941943660 is 6634914921.

12941943660 is a `hidden beast` number, since 12 + 94 + 194 + 366 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×129419436602 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12941943661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35949664 + ... + 35950023.

Almost surely, 212941943660 is an apocalyptic number.

12941943660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12941943660 is an abundant number, since it is smaller than the sum of its proper divisors (26315285988).

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

12941943660 is a wasteful number, since it uses less digits than its factorization.

12941943660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71899702 (or 71899697 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 12941943660 in words is "twelve billion, nine hundred forty-one million, nine hundred forty-three thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 71899687 143799374 215699061 287598748 359498435 431398122 647097183 718996870 862796244 1078495305 1294194366 1437993740 2156990610 2588388732 3235485915 4313981220 6470971830 12941943660