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20664613130 = 2571012922859
BaseRepresentation
bin10011001111101101…
…001111100100001010
31222100011010010001212
4103033231033210022
5314310120110010
613254310213122
71331042212340
oct231755174412
958304103055
1020664613130
1188446a9777
1240086541a2
131c442a7145
14100068b990
1580e29d505
hex4cfb4f90a

20664613130 has 32 divisors (see below), whose sum is σ = 42930967680. Its totient is φ = 7014859200.

The previous prime is 20664613127. The next prime is 20664613141. The reversal of 20664613130 is 3131646602.

It is an unprimeable number.

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, 1454360 + ... + 1468499.

It is an arithmetic number, because the mean of its divisors is an integer number (1341592740).

Almost surely, 220664613130 is an apocalyptic number.

20664613130 is an abundant number, since it is smaller than the sum of its proper divisors (22266354550).

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

20664613130 is a wasteful number, since it uses less digits than its factorization.

20664613130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922974.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 20664613130 in words is "twenty billion, six hundred sixty-four million, six hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 101 202 505 707 1010 1414 3535 7070 2922859 5845718 14614295 20460013 29228590 40920026 102300065 204600130 295208759 590417518 1476043795 2066461313 2952087590 4132922626 10332306565 20664613130