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68719746657365 = 519171957849903
BaseRepresentation
bin11111010000000000100000…
…00101101010110001010101
3100000022112200022002110001122
433220000100011222301111
533001401020121013430
6402053225451133325
720321560245542066
oct1750002005526125
9300275608073048
1068719746657365
111a994976516981
12785a420144245
132c4632397420b
1412d80a6a9656d
157e2859496ee5
hex3e801016ac55

68719746657365 has 8 divisors (see below), whose sum is σ = 82895443089408. Its totient is φ = 54687965925520.

The previous prime is 68719746657329. The next prime is 68719746657413. The reversal of 68719746657365 is 56375664791786.

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

It is not a de Polignac number, because 68719746657365 - 28 = 68719746657109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68719746657365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35978923997 + ... + 35978925906.

It is an arithmetic number, because the mean of its divisors is an integer number (10361930386176).

Almost surely, 268719746657365 is an apocalyptic number.

It is an amenable number.

68719746657365 is a deficient number, since it is larger than the sum of its proper divisors (14175696432043).

68719746657365 is a wasteful number, since it uses less digits than its factorization.

68719746657365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71957850099.

The product of its digits is 9601804800, while the sum is 80.

The spelling of 68719746657365 in words is "sixty-eight trillion, seven hundred nineteen billion, seven hundred forty-six million, six hundred fifty-seven thousand, three hundred sixty-five".

Divisors: 1 5 191 955 71957849903 359789249515 13743949331473 68719746657365