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51459368650841 = 1091232938292181
BaseRepresentation
bin10111011001101010100010…
…11000111000100001011001
320202012110121212202000010202
423230311101120320201121
523221102241333311331
6301240035124151545
713560550061321564
oct1354652130704131
9222173555660122
1051459368650841
111543a883073478
1259312065385b5
1322937a0033338
14c9c90a8bd4db
155e3899db0ecb
hex2ecd51638859

51459368650841 has 8 divisors (see below), whose sum is σ = 51935686446600. Its totient is φ = 50983127464320.

The previous prime is 51459368650787. The next prime is 51459368650849. The reversal of 51459368650841 is 14805686395415.

It can be written as a sum of positive squares in 4 ways, for example, as 116124874441 + 51343243776400 = 340771^2 + 7165420^2 .

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 51459368650841 - 218 = 51459368388697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51459368650849) 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, 17802230 + ... + 20489951.

It is an arithmetic number, because the mean of its divisors is an integer number (6491960805825).

Almost surely, 251459368650841 is an apocalyptic number.

It is an amenable number.

51459368650841 is a deficient number, since it is larger than the sum of its proper divisors (476317795759).

51459368650841 is a wasteful number, since it uses less digits than its factorization.

51459368650841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38304619.

The product of its (nonzero) digits is 124416000, while the sum is 65.

The spelling of 51459368650841 in words is "fifty-one trillion, four hundred fifty-nine billion, three hundred sixty-eight million, six hundred fifty thousand, eight hundred forty-one".

Divisors: 1 109 12329 1343861 38292181 4173847729 472104299549 51459368650841