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47271344557 = 1961710393881
BaseRepresentation
bin101100000001100101…
…110111100110101101
311112000102101010001011
4230001211313212231
51233302431011212
633414404545221
73262266541033
oct540145674655
9145012333034
1047271344557
1119058494908
1291b30b2211
1345c46622c8
14240619c553
15136a04e4a7
hexb019779ad

47271344557 has 16 divisors (see below), whose sum is σ = 49900780800. Its totient is φ = 44656254720.

The previous prime is 47271344551. The next prime is 47271344581. The reversal of 47271344557 is 75544317274.

It is a cyclic number.

It is not a de Polignac number, because 47271344557 - 211 = 47271342509 is a prime.

It is a super-2 number, since 2×472713445572 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47271344557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47271344551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12178257 + ... + 12182137.

It is an arithmetic number, because the mean of its divisors is an integer number (3118798800).

Almost surely, 247271344557 is an apocalyptic number.

It is an amenable number.

47271344557 is a deficient number, since it is larger than the sum of its proper divisors (2629436243).

47271344557 is a wasteful number, since it uses less digits than its factorization.

47271344557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556.

The product of its digits is 3292800, while the sum is 49.

The spelling of 47271344557 in words is "forty-seven billion, two hundred seventy-one million, three hundred forty-four thousand, five hundred fifty-seven".

Divisors: 1 19 617 1039 3881 11723 19741 73739 641063 2394577 4032359 12180197 45496963 76614821 2487965503 47271344557