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68786287345 = 531443782499
BaseRepresentation
bin100000000001111111…
…0110111001011110001
320120112211112110010001
41000003332313023301
52111333242143340
651333332510001
74653405536536
oct1000376671361
9216484473101
1068786287345
112719907a866
12113b847b301
136642b61799
143487756d8d
151bc8cb729a
hex1003fb72f1

68786287345 has 8 divisors (see below), whose sum is σ = 85206240000. Its totient is φ = 53253899760.

The previous prime is 68786287333. The next prime is 68786287411. The reversal of 68786287345 is 54378268786.

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

It is not a de Polignac number, because 68786287345 - 25 = 68786287313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221891095 + ... + 221891404.

It is an arithmetic number, because the mean of its divisors is an integer number (10650780000).

Almost surely, 268786287345 is an apocalyptic number.

It is an amenable number.

68786287345 is a deficient number, since it is larger than the sum of its proper divisors (16419952655).

68786287345 is a wasteful number, since it uses less digits than its factorization.

68786287345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443782535.

The product of its digits is 108380160, while the sum is 64.

The spelling of 68786287345 in words is "sixty-eight billion, seven hundred eighty-six million, two hundred eighty-seven thousand, three hundred forty-five".

Divisors: 1 5 31 155 443782499 2218912495 13757257469 68786287345