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8213072136185 = 572123127232123
BaseRepresentation
bin111011110000100000100…
…1111110100011111111001
31002002011101010012102001202
41313201001033310133321
52034030332431324220
625245011103223545
71505242404202400
oct167410117643771
932064333172052
108213072136185
112687165119874
12b078b92a7bb5
13477649220c57
1420572c906637
15e3992d3a275
hex778413f47f9

8213072136185 has 24 divisors (see below), whose sum is σ = 11474092054656. Its totient is φ = 5627245690080.

The previous prime is 8213072136173. The next prime is 8213072136221. The reversal of 8213072136185 is 5816312703128.

It is not a de Polignac number, because 8213072136185 - 28 = 8213072135929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13314467 + ... + 13917656.

It is an arithmetic number, because the mean of its divisors is an integer number (478087168944).

Almost surely, 28213072136185 is an apocalyptic number.

It is an amenable number.

8213072136185 is a deficient number, since it is larger than the sum of its proper divisors (3261019918471).

8213072136185 is a wasteful number, since it uses less digits than its factorization.

8213072136185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27233373 (or 27233366 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 8213072136185 in words is "eight trillion, two hundred thirteen billion, seventy-two million, one hundred thirty-six thousand, one hundred eighty-five".

Divisors: 1 5 7 35 49 245 1231 6155 8617 43085 60319 301595 27232123 136160615 190624861 953124305 1334374027 6671870135 33522743413 167613717065 234659203891 1173296019455 1642614427237 8213072136185