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51983009473 = 197155316967
BaseRepresentation
bin110000011010011011…
…011100011011000001
311222011210012111020011
4300122123130123001
51322430122300343
635514120144521
73520121201323
oct603233343301
9158153174204
1051983009473
112005606545a
12a0a9008141
134b95848705
142731c45613
1515439ed29d
hexc1a6dc6c1

51983009473 has 16 divisors (see below), whose sum is σ = 55507645440. Its totient is φ = 48537694800.

The previous prime is 51983009461. The next prime is 51983009497. The reversal of 51983009473 is 37490038915.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-51983009473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51983003473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7457836 + ... + 7464802.

It is an arithmetic number, because the mean of its divisors is an integer number (3469227840).

Almost surely, 251983009473 is an apocalyptic number.

It is an amenable number.

51983009473 is a deficient number, since it is larger than the sum of its proper divisors (3524635967).

51983009473 is a wasteful number, since it uses less digits than its factorization.

51983009473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 51983009473 in words is "fifty-one billion, nine hundred eighty-three million, nine thousand, four hundred seventy-three".

Divisors: 1 19 71 1349 5531 6967 105089 132373 392701 494657 7461319 9398483 38534477 732155063 2735947867 51983009473