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68395001187 = 3107843211403
BaseRepresentation
bin111111101100101010…
…001110010101100011
320112112120021001102010
4333230222032111203
52110033110014222
651230434124003
74640614626552
oct775452162543
9215476231363
1068395001187
1127008216777
1211309420603
1365aca81506
14344b7bdd99
151ba477580c
hexfeca8e563

68395001187 has 8 divisors (see below), whose sum is σ = 91194611904. Its totient is φ = 45596028968.

The previous prime is 68395001179. The next prime is 68395001209. The reversal of 68395001187 is 78110059386.

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 68395001187 - 23 = 68395001179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68395001287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217828 + ... + 429230.

It is an arithmetic number, because the mean of its divisors is an integer number (11399326488).

Almost surely, 268395001187 is an apocalyptic number.

68395001187 is a deficient number, since it is larger than the sum of its proper divisors (22799610717).

68395001187 is a wasteful number, since it uses less digits than its factorization.

68395001187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319249.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 68395001187 in words is "sixty-eight billion, three hundred ninety-five million, one thousand, one hundred eighty-seven".

Divisors: 1 3 107843 211403 323529 634209 22798333729 68395001187