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68538445741 = 478539170777
BaseRepresentation
bin111111110101001101…
…011010111110101101
320112220120011210100101
4333311031122332231
52110331320230431
651253000431101
74644306114343
oct776515327655
9215816153311
1068538445741
1127081190797
1211349478491
1366036c664c
14346287d993
151bb215c961
hexff535afad

68538445741 has 8 divisors (see below), whose sum is σ = 70005317760. Its totient is φ = 67071932448.

The previous prime is 68538445711. The next prime is 68538445747. The reversal of 68538445741 is 14754483586.

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 68538445741 - 223 = 68530057133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68538445747) 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, 315945 + ... + 486721.

It is an arithmetic number, because the mean of its divisors is an integer number (8750664720).

Almost surely, 268538445741 is an apocalyptic number.

It is an amenable number.

68538445741 is a deficient number, since it is larger than the sum of its proper divisors (1466872019).

68538445741 is a wasteful number, since it uses less digits than its factorization.

68538445741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179363.

The product of its digits is 12902400, while the sum is 55.

The spelling of 68538445741 in words is "sixty-eight billion, five hundred thirty-eight million, four hundred forty-five thousand, seven hundred forty-one".

Divisors: 1 47 8539 170777 401333 8026519 1458264803 68538445741