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66880067010 = 23518111230997
BaseRepresentation
bin111110010010010111…
…001101010111000010
320101121222122102101220
4332102113031113002
52043432244121020
650420235535510
74555231122051
oct762227152702
9211558572356
1066880067010
1126400066259
1210b65bba596
1363cac60863
143346510398
151b1677b240
hexf925cd5c2

66880067010 has 32 divisors (see below), whose sum is σ = 160600923072. Its totient is φ = 17824822080.

The previous prime is 66880066991. The next prime is 66880067011. The reversal of 66880067010 is 1076008866.

It is not an unprimeable number, because it can be changed into a prime (66880067011) by changing a digit.

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, 561169 + ... + 669828.

It is an arithmetic number, because the mean of its divisors is an integer number (5018778846).

Almost surely, 266880067010 is an apocalyptic number.

66880067010 is an abundant number, since it is smaller than the sum of its proper divisors (93720856062).

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

66880067010 is a wasteful number, since it uses less digits than its factorization.

66880067010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232818.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 66880067010 in words is "sixty-six billion, eight hundred eighty million, sixty-seven thousand, ten".

Divisors: 1 2 3 5 6 10 15 30 1811 3622 5433 9055 10866 18110 27165 54330 1230997 2461994 3692991 6154985 7385982 12309970 18464955 36929910 2229335567 4458671134 6688006701 11146677835 13376013402 22293355670 33440033505 66880067010