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66744260970 = 2352396730813
BaseRepresentation
bin111110001010010001…
…001001100101101010
320101021112002202112120
4332022101021211222
52043143012322340
650354545052110
74551661600062
oct761221114552
9211245082476
1066744260970
1126340439162
1210b28627036
1363a8a9145a
14333247c3a2
151b098a24d0
hexf8a44996a

66744260970 has 32 divisors (see below), whose sum is σ = 167150846592. Its totient is φ = 17024622912.

The previous prime is 66744260969. The next prime is 66744261011. The reversal of 66744260970 is 7906244766.

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, 48364717 + ... + 48366096.

It is an arithmetic number, because the mean of its divisors is an integer number (5223463956).

Almost surely, 266744260970 is an apocalyptic number.

66744260970 is an abundant number, since it is smaller than the sum of its proper divisors (100406585622).

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

66744260970 is a wasteful number, since it uses less digits than its factorization.

66744260970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96730846.

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 66744260970 in words is "sixty-six billion, seven hundred forty-four million, two hundred sixty thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 96730813 193461626 290192439 483654065 580384878 967308130 1450962195 2224808699 2901924390 4449617398 6674426097 11124043495 13348852194 22248086990 33372130485 66744260970