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66622631303 = 244727226249
BaseRepresentation
bin111110000011000001…
…001010110110000111
320100222001020100000002
4332003001022312013
52042420343200203
650334522111515
74545654010454
oct760301126607
9210861210002
1066622631303
1126288813a78
1210ab394b59b
136389816837
14332025a82b
151aedd78d88
hexf8304ad87

66622631303 has 4 divisors (see below), whose sum is σ = 66649860000. Its totient is φ = 66595402608.

The previous prime is 66622631297. The next prime is 66622631351. The reversal of 66622631303 is 30313622666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30313622666 = 215156811333.

It is a cyclic number.

It is not a de Polignac number, because 66622631303 - 26 = 66622631239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66622631363) 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 3 ways as a sum of consecutive naturals, for example, 13610678 + ... + 13615571.

It is an arithmetic number, because the mean of its divisors is an integer number (16662465000).

Almost surely, 266622631303 is an apocalyptic number.

66622631303 is a deficient number, since it is larger than the sum of its proper divisors (27228697).

66622631303 is a wasteful number, since it uses less digits than its factorization.

66622631303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27228696.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 66622631303 in words is "sixty-six billion, six hundred twenty-two million, six hundred thirty-one thousand, three hundred three".

Divisors: 1 2447 27226249 66622631303