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54000000047 = 7172319729631
BaseRepresentation
bin110010010010101001…
…101001110000101111
312011101100112020010202
4302102221221300233
51341043000000142
640450211224115
73621112266320
oct622251516057
9164340466122
1054000000047
11209a0657314
12a5705a803b
135127691466
142883a84447
151610b1a032
hexc92a69c2f

54000000047 has 16 divisors (see below), whose sum is σ = 68185608192. Its totient is φ = 41668978560.

The previous prime is 54000000031. The next prime is 54000000053. The reversal of 54000000047 is 74000000045.

54000000047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54000000047 - 24 = 54000000031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53999999965 and 54000000028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54000003047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9862079 + ... + 9867552.

It is an arithmetic number, because the mean of its divisors is an integer number (4261600512).

Almost surely, 254000000047 is an apocalyptic number.

54000000047 is a deficient number, since it is larger than the sum of its proper divisors (14185608145).

54000000047 is a wasteful number, since it uses less digits than its factorization.

54000000047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19729678.

The product of its (nonzero) digits is 560, while the sum is 20.

The spelling of 54000000047 in words is "fifty-four billion, forty-seven", and thus it is an aban number.

Divisors: 1 7 17 23 119 161 391 2737 19729631 138107417 335403727 453781513 2347826089 3176470591 7714285721 54000000047