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51070618952 = 23175340117669
BaseRepresentation
bin101111100100000010…
…111100110101001000
311212211012101020201122
4233210002330311020
51314043034301302
635243404334412
73455402045543
oct574402746510
9155735336648
1051070618952
111a72803aa01
129a93544408
134a7b804372
1426869c185a
1514dd8753a2
hexbe40bcd48

51070618952 has 64 divisors (see below), whose sum is σ = 103566697200. Its totient is φ = 23519641600.

The previous prime is 51070618919. The next prime is 51070618961. The reversal of 51070618952 is 25981607015.

51070618952 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 8 ways, for example, as 45311933956 + 5758684996 = 212866^2 + 75886^2 .

It is an unprimeable number.

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, 2881574 + ... + 2899242.

Almost surely, 251070618952 is an apocalyptic number.

It is an amenable number.

51070618952 is an abundant number, since it is smaller than the sum of its proper divisors (52496078248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51070618952 is a wasteful number, since it uses less digits than its factorization.

51070618952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18146 (or 18142 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 51070618952 in words is "fifty-one billion, seventy million, six hundred eighteen thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 17 34 53 68 106 136 212 401 424 802 901 1604 1802 3208 3604 6817 7208 13634 17669 21253 27268 35338 42506 54536 70676 85012 141352 170024 300373 361301 600746 722602 936457 1201492 1445204 1872914 2402984 2890408 3745828 7085269 7491656 14170538 15919769 28341076 31839538 56682152 63679076 120449573 127358152 240899146 375519257 481798292 751038514 963596584 1502077028 3004154056 6383827369 12767654738 25535309476 51070618952