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12550674821 = 91116078573
BaseRepresentation
bin10111011000001010…
…00001100110000101
31012101200022100012012
423230011001212011
5201200433043241
65433220304005
7623005655456
oct135405014605
935350270165
1012550674821
11536058a833
122523242005
131250280209
14870c0512d
154d6c986eb
hex2ec141985

12550674821 has 8 divisors (see below), whose sum is σ = 12573736704. Its totient is φ = 12527635120.

The previous prime is 12550674793. The next prime is 12550674853. The reversal of 12550674821 is 12847605521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12550674821 - 214 = 12550658437 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 (12550634821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459691 + ... + 1468263.

It is an arithmetic number, because the mean of its divisors is an integer number (1571717088).

Almost surely, 212550674821 is an apocalyptic number.

It is an amenable number.

12550674821 is a deficient number, since it is larger than the sum of its proper divisors (23061883).

12550674821 is an equidigital number, since it uses as much as digits as its factorization.

12550674821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12550674821 in words is "twelve billion, five hundred fifty million, six hundred seventy-four thousand, eight hundred twenty-one".

Divisors: 1 911 1607 8573 1463977 7810003 13776811 12550674821