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68479626385 = 546512944727
BaseRepresentation
bin111111110001101101…
…000010110010010001
320112202110111110100201
4333301231002302101
52110221241021020
651243100015201
74642663135342
oct776155026221
9215673443321
1068479626385
1127050a66955
1211331831501
1365c4470bb1
143458b2c0c9
151babddea0a
hexff1b42c91

68479626385 has 8 divisors (see below), whose sum is σ = 82193247936. Its totient is φ = 54771903600.

The previous prime is 68479626379. The next prime is 68479626407. The reversal of 68479626385 is 58362697486.

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

It is not a de Polignac number, because 68479626385 - 25 = 68479626353 is a prime.

It is a Duffinian number.

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, 1449109 + ... + 1495618.

It is an arithmetic number, because the mean of its divisors is an integer number (10274155992).

Almost surely, 268479626385 is an apocalyptic number.

It is an amenable number.

68479626385 is a deficient number, since it is larger than the sum of its proper divisors (13713621551).

68479626385 is a wasteful number, since it uses less digits than its factorization.

68479626385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949383.

The product of its digits is 104509440, while the sum is 64.

The spelling of 68479626385 in words is "sixty-eight billion, four hundred seventy-nine million, six hundred twenty-six thousand, three hundred eighty-five".

Divisors: 1 5 4651 23255 2944727 14723635 13695925277 68479626385