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12960294989 = 21161423199
BaseRepresentation
bin11000001000111111…
…00110100001001101
31020110020002012102112
430010133212201031
5203020313414424
65542012033405
7636111455405
oct140437464115
936406065375
1012960294989
1155508264a4
122618462865
1312b70ac505
148ad391805
1550cc0c60e
hex3047e684d

12960294989 has 4 divisors (see below), whose sum is σ = 13021718400. Its totient is φ = 12898871580.

The previous prime is 12960294959. The next prime is 12960295063. The reversal of 12960294989 is 98949206921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12960294989 - 28 = 12960294733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12960294959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30711389 + ... + 30711810.

It is an arithmetic number, because the mean of its divisors is an integer number (3255429600).

Almost surely, 212960294989 is an apocalyptic number.

It is an amenable number.

12960294989 is a deficient number, since it is larger than the sum of its proper divisors (61423411).

12960294989 is an equidigital number, since it uses as much as digits as its factorization.

12960294989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61423410.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 12960294989 in words is "twelve billion, nine hundred sixty million, two hundred ninety-four thousand, nine hundred eighty-nine".

Divisors: 1 211 61423199 12960294989