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12910656000 = 29353116113
BaseRepresentation
bin11000000011000100…
…01111101000000000
31020022202200021112110
430001202033220000
5202420111443000
65533040055320
7634636523334
oct140142175000
936282607473
1012910656000
115525801a40
122603904540
1312a9a1c528
148a694d7c4
155086a4850
hex30188fa00

12910656000 has 320 divisors, whose sum is σ = 46834609536. Its totient is φ = 3129344000.

The previous prime is 12910655981. The next prime is 12910656007. The reversal of 12910656000 is 65601921.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12910656007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2108944 + ... + 2115056.

Almost surely, 212910656000 is an apocalyptic number.

12910656000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12910656000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23417304768).

12910656000 is an abundant number, since it is smaller than the sum of its proper divisors (33923953536).

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

12910656000 is an equidigital number, since it uses as much as digits as its factorization.

12910656000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160 (or 6134 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 12910656000 in words is "twelve billion, nine hundred ten million, six hundred fifty-six thousand".