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12803741666 = 213170968927
BaseRepresentation
bin10111110110010100…
…11001011111100010
31020001022111110122022
423323022121133202
5202210224213131
65514300341442
7632201002622
oct137312313742
936038443568
1012803741666
115480418691
122593b44882
131290827801
1489667c882
154ee0d637b
hex2fb2997e2

12803741666 has 16 divisors (see below), whose sum is σ = 19379796480. Its totient is φ = 6343949040.

The previous prime is 12803741597. The next prime is 12803741707. The reversal of 12803741666 is 66614730821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151295 + ... + 220221.

It is an arithmetic number, because the mean of its divisors is an integer number (1211237280).

Almost surely, 212803741666 is an apocalyptic number.

12803741666 is a deficient number, since it is larger than the sum of its proper divisors (6576054814).

12803741666 is a wasteful number, since it uses less digits than its factorization.

12803741666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69769.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 12803741666 in words is "twelve billion, eight hundred three million, seven hundred forty-one thousand, six hundred sixty-six".

Divisors: 1 2 131 262 709 1418 68927 92879 137854 185758 9029437 18058874 48869243 97738486 6401870833 12803741666