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51407948282 = 2103331753937
BaseRepresentation
bin101111111000001001…
…110000100111111010
311220200201010100120112
4233320021300213322
51320240413321112
635341054424322
73466636231145
oct577011604772
9156621110515
1051407948282
111a8904a0479
129b685020a2
134b03672212
1426b971105c
15150d2a9a22
hexbf82709fa

51407948282 has 16 divisors (see below), whose sum is σ = 78095913792. Its totient is φ = 25377485760.

The previous prime is 51407948281. The next prime is 51407948321. The reversal of 51407948282 is 28284970415.

It is a self number, because there is not a number n which added to its sum of digits gives 51407948282.

It is not an unprimeable number, because it can be changed into a prime (51407948281) 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, 308783 + ... + 445154.

It is an arithmetic number, because the mean of its divisors is an integer number (4880994612).

Almost surely, 251407948282 is an apocalyptic number.

51407948282 is a deficient number, since it is larger than the sum of its proper divisors (26687965510).

51407948282 is a wasteful number, since it uses less digits than its factorization.

51407948282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754373.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 51407948282 in words is "fifty-one billion, four hundred seven million, nine hundred forty-eight thousand, two hundred eighty-two".

Divisors: 1 2 103 206 331 662 34093 68186 753937 1507874 77655511 155311022 249553147 499106294 25703974141 51407948282