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12900697528320 = 2113657271911
BaseRepresentation
bin1011101110111010110101…
…1111100101100000000000
31200200021221210101022000000
42323232231133211200000
53142331112031401240
643234255412000000
72501021211461220
oct273565537454000
950607853338000
1012900697528320
114124178485a88
1215442a9600000
137276b8831034
1432857b898080
1517589b7d2430
hexbbbad7e5800

12900697528320 has 1344 divisors, whose sum is σ = 53294089605120. Its totient is φ = 2934625075200.

The previous prime is 12900697528297. The next prime is 12900697528333. The reversal of 12900697528320 is 2382579600921.

12900697528320 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 0 + 6 + 97 + 528 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 14161028665 + ... + 14161029575.

It is an arithmetic number, because the mean of its divisors is an integer number (39653340480).

Almost surely, 212900697528320 is an apocalyptic number.

12900697528320 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 12900697528320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26647044802560).

12900697528320 is an abundant number, since it is smaller than the sum of its proper divisors (40393392076800).

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

12900697528320 is an frugal number, since it uses more digits than its factorization.

12900697528320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 12900697528320 in words is "twelve trillion, nine hundred billion, six hundred ninety-seven million, five hundred twenty-eight thousand, three hundred twenty".