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76665007666 = 21329101677729
BaseRepresentation
bin100011101100110010…
…1110010111000110010
321022212220201220120101
41013121211302320302
52224002220221131
655115221103014
75352554545612
oct1073145627062
9238786656511
1076665007666
112a571441a75
1212a36b57a6a
1372ca220380
1439d3c90a42
151eda807c61
hex11d9972e32

76665007666 has 16 divisors (see below), whose sum is σ = 128113939800. Its totient is φ = 34163716608.

The previous prime is 76665007651. The next prime is 76665007673. The reversal of 76665007666 is 66670056667.

It can be written as a sum of positive squares in 4 ways, for example, as 44572076641 + 32092931025 = 211121^2 + 179145^2 .

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 7 ways as a sum of consecutive naturals, for example, 50838111 + ... + 50839618.

Almost surely, 276665007666 is an apocalyptic number.

76665007666 is a deficient number, since it is larger than the sum of its proper divisors (51448932134).

76665007666 is a wasteful number, since it uses less digits than its factorization.

76665007666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101677773.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 76665007666 in words is "seventy-six billion, six hundred sixty-five million, seven thousand, six hundred sixty-six".

Divisors: 1 2 13 26 29 58 377 754 101677729 203355458 1321810477 2643620954 2948654141 5897308282 38332503833 76665007666