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8106805094387 = 67120997090961
BaseRepresentation
bin111010111111000001100…
…1111001110011111110011
31001201000002012000100122212
41311332003033032133303
52030310214101010022
625124114223522335
71464461121225116
oct165760317163763
931630065010585
108106805094387
11264609314a48a
12aab1a07593ab
1346a61221726c
1420052b40257d
15e0d238193e2
hex75f833ce7f3

8106805094387 has 4 divisors (see below), whose sum is σ = 8227802185416. Its totient is φ = 7985808003360.

The previous prime is 8106805094369. The next prime is 8106805094389. The reversal of 8106805094387 is 7834905086018.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8106805094387 - 28 = 8106805094131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8106805094389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60498545414 + ... + 60498545547.

It is an arithmetic number, because the mean of its divisors is an integer number (2056950546354).

Almost surely, 28106805094387 is an apocalyptic number.

8106805094387 is a deficient number, since it is larger than the sum of its proper divisors (120997091029).

8106805094387 is a wasteful number, since it uses less digits than its factorization.

8106805094387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120997091028.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 8106805094387 in words is "eight trillion, one hundred six billion, eight hundred five million, ninety-four thousand, three hundred eighty-seven".

Divisors: 1 67 120997090961 8106805094387