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8123081197 = 711105494561
BaseRepresentation
bin1111001000010110…
…00110000111101101
3202222010000021120011
413210023012013231
5113114002044242
63422013453221
7405204023320
oct74413060755
922863007504
108123081197
1134992a4150
1216a84a1211
139c5ba862a
14570b867b7
1532820dd17
hex1e42c61ed

8123081197 has 8 divisors (see below), whose sum is σ = 10127477952. Its totient is φ = 6329673600.

The previous prime is 8123081173. The next prime is 8123081203. The reversal of 8123081197 is 7911803218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8123081197 - 219 = 8122556909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8123081107) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 52747204 + ... + 52747357.

It is an arithmetic number, because the mean of its divisors is an integer number (1265934744).

Almost surely, 28123081197 is an apocalyptic number.

It is an amenable number.

8123081197 is a deficient number, since it is larger than the sum of its proper divisors (2004396755).

8123081197 is a wasteful number, since it uses less digits than its factorization.

8123081197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105494579.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 8123081197 is about 90128.1376541200. The cubic root of 8123081197 is about 2010.2046108217.

The spelling of 8123081197 in words is "eight billion, one hundred twenty-three million, eighty-one thousand, one hundred ninety-seven".

Divisors: 1 7 11 77 105494561 738461927 1160440171 8123081197