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19679061066 = 2371572984389
BaseRepresentation
bin10010010100111101…
…101010010001001010
31212210110121212210120
4102110331222101022
5310300314423231
613012422324110
71264444154610
oct222475522112
955713555716
1019679061066
118389353935
123992589636
131b18058242
14d498216b0
157a29c2d96
hex494f6a44a

19679061066 has 32 divisors (see below), whose sum is σ = 45267227520. Its totient is φ = 5586774336.

The previous prime is 19679061029. The next prime is 19679061107. The reversal of 19679061066 is 66016097691.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485601 + ... + 1498788.

It is an arithmetic number, because the mean of its divisors is an integer number (1414600860).

Almost surely, 219679061066 is an apocalyptic number.

19679061066 is an abundant number, since it is smaller than the sum of its proper divisors (25588166454).

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

19679061066 is a wasteful number, since it uses less digits than its factorization.

19679061066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984558.

The product of its (nonzero) digits is 734832, while the sum is 51.

The spelling of 19679061066 in words is "nineteen billion, six hundred seventy-nine million, sixty-one thousand, sixty-six".

Divisors: 1 2 3 6 7 14 21 42 157 314 471 942 1099 2198 3297 6594 2984389 5968778 8953167 17906334 20890723 41781446 62672169 125344338 468549073 937098146 1405647219 2811294438 3279843511 6559687022 9839530533 19679061066