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66883490331 = 375286160251
BaseRepresentation
bin111110010010100100…
…010001001000011011
320101122020002100022120
4332102210101020123
52043434133142311
650420441152323
74555302200430
oct762244211033
9211566070276
1066883490331
1126401a94249
1210b6718b6a3
1363cb88baa8
143346b61b87
151b16c05706
hexf9291121b

66883490331 has 16 divisors (see below), whose sum is σ = 101921319168. Its totient is φ = 38217780000.

The previous prime is 66883490329. The next prime is 66883490341. The reversal of 66883490331 is 13309438866.

It is not a de Polignac number, because 66883490331 - 21 = 66883490329 is a prime.

It is a super-3 number, since 3×668834903313 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (66883490341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079956 + ... + 1140206.

It is an arithmetic number, because the mean of its divisors is an integer number (6370082448).

Almost surely, 266883490331 is an apocalyptic number.

66883490331 is a deficient number, since it is larger than the sum of its proper divisors (35037828837).

66883490331 is a wasteful number, since it uses less digits than its factorization.

66883490331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113122.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 66883490331 in words is "sixty-six billion, eight hundred eighty-three million, four hundred ninety thousand, three hundred thirty-one".

Divisors: 1 3 7 21 52861 60251 158583 180753 370027 421757 1110081 1265271 3184928111 9554784333 22294496777 66883490331